Learn Editor: Update Set-SPOTenant.md

Author: divyachapan

sharepoint/sharepoint-ps/Microsoft.Online.SharePoint.PowerShell/Set-SPOTenant.md

@@ -267,6 +267,7 @@ Set-SPOTenant [-MinCompatibilityLevel <Int32>] [-MaxCompatibilityLevel <Int32>]
  [-AllowWebPropertyBagUpdateWhenDenyAddAndCustomizePagesIsEnabled <Boolean>] [-EnforceRequestDigest <Boolean>]
  [-RestrictResourceAccountAccess <Boolean>] [-RestrictExternalSharingForAgents <Boolean>]
  [-AllowFileArchive <Boolean>] [-AllowFileArchiveByDefault <Boolean>] [<CommonParameters>]
+ [-EnableNotificationsSubscriptions <Boolean>]
 ```
 
 ### ParamSetMultipleSites