fix: align README table column widths for markdown linter

Fix MD060 table-column-style error caused by misaligned pipe character
in the EXEMPT_ECOSYSTEMS row after updating the description text.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: zkoppert

README.md

@@ -129,7 +129,7 @@ The needed GitHub app permissions are the following under `Repository permission
 | `FILTER_VISIBILITY`        | False                                                                        | "public,private,internal"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | Use this flag to filter repositories in scope by their visibility (`public`, `private`, `internal`). By default all repository are targeted. ex: to ignore public repositories set this value to `private,internal`.                                                                                                                                                                                                                                                                                                                                                                                                                 |
 | `BATCH_SIZE`               | False                                                                        | None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Set this to define the maximum amount of eligible repositories for every run. This is useful if you are targeting large organizations and you don't want to flood repositories with pull requests / issues. ex: if you want to target 20 repositories per time, set this to 20.                                                                                                                                                                                                                                                                                                                                                      |
 | `ENABLE_SECURITY_UPDATES`  | False                                                                        | true                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | If set to true, Evergreen will enable [Dependabot security updates](https://docs.github.com/en/code-security/dependabot/dependabot-security-updates/configuring-dependabot-security-updates) on target repositories. Note that the GitHub token needs to have the `administration:write` permission on every repository in scope to successfully enable security updates.                                                                                                                                                                                                                                                            |
-| `EXEMPT_ECOSYSTEMS`        | False                                                                        | ""                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | A list of [package ecosystems](https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem) to exempt from the generated dependabot configuration. To ignore ecosystems set this to one or more of `bundler`, `cargo`, `composer`, `devcontainers`, `docker`, `github-actions`, `gomod`, `gradle`, `maven`, `mix`, `npm`, `nuget`, `pip` and `terraform`. Unrecognized values will raise a `ValueError`. ex: if you don't want Dependabot to update Dockerfiles and Github Actions you can set this to `docker,github-actions`.                                                                                          |
+| `EXEMPT_ECOSYSTEMS`        | False                                                                        | ""                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | A list of [package ecosystems](https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem) to exempt from the generated dependabot configuration. To ignore ecosystems set this to one or more of `bundler`, `cargo`, `composer`, `devcontainers`, `docker`, `github-actions`, `gomod`, `gradle`, `maven`, `mix`, `npm`, `nuget`, `pip` and `terraform`. Unrecognized values will raise a `ValueError`. ex: if you don't want Dependabot to update Dockerfiles and Github Actions you can set this to `docker,github-actions`.               |
 | `REPO_SPECIFIC_EXEMPTIONS` | False                                                                        | ""                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | A list of repositories that should be exempt from specific package ecosystems similar to EXEMPT_ECOSYSTEMS but those apply to all repositories. ex: `org1/repo1:docker,github-actions;org1/repo2:pip` would set exempt_ecosystems for `org1/repo1` to be `['docker', 'github-actions']`, and for `org1/repo2` it would be `['pip']`, while for every other repository evaluated, it would be set by the env variable `EXEMPT_ECOSYSTEMS`. NOTE: If you want specific exemptions to be added on top of the already specified global exemptions, you need to add the global exemptions to each repo specific exemption.                |
 | `SCHEDULE`                 | False                                                                        | `weekly`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Schedule interval by which to check for dependency updates via Dependabot. Allowed values are `daily`, `weekly`, or `monthly`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 | `SCHEDULE_DAY`             | False                                                                        | ''                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Scheduled day by which to check for dependency updates via Dependabot. Allowed values are days of the week full names (i.e., `monday`)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |