docs: fix input guide example to bound the wait with wait_duration

[vdusek]

The "Pass input to an Actor" guide example claimed that timeout=timedelta(seconds=60) makes call() wait up to 60 seconds for the run to finish. It doesn't. On call(), timeout is the per-request HTTP timeout forwarded to start(), while the wait cap is wait_duration (default None, i.e. wait indefinitely). A user copying the example would block indefinitely on a long or never-finishing run. The sync and async examples now use wait_duration=timedelta(seconds=60) and the comment is reworded accordingly.

The stale copies under website/versioned_docs/ are left untouched on purpose. The versioning workflow deletes and re-snapshots version-3.0 from docs/ on every 3.x release, so the fix propagates there automatically.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.63%. Comparing base (a8a393b) to head (cea8b05).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #955      +/-   ##
==========================================
+ Coverage   94.61%   94.63%   +0.01%     
==========================================
  Files          58       58              
  Lines        5239     5239              
==========================================
+ Hits         4957     4958       +1     
+ Misses        282      281       -1     

Flag	Coverage Δ
integration	92.82% <ø> (+0.15%)	⬆️
unit	83.73% <ø> (ø)

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