Add Fabric trial creation audit operation

[mibruhje]

Summary

• Add the CreatedFabricTrial audit operation to the Fabric operation list.
• Document the friendly name and description for trial capacity creation.
• Refresh the article metadata date.

Validation

• Ran git diff --check successfully.
• Confirmed the operation follows the existing table format and placement.

[prmerger-automator]

mibruhje : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[prmerger-automator]

mibruhje : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[mibruhje]

#hold-off

[prmerger-automator]

You typed hold-off, but the PR wasn't signed off, so nothing was changed.

[learn-build-service-prod]

Learn Build status updates of commit 222c895:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/admin/operation-list.md	✅Succeeded

For more details, please refer to the build report.

[Regan Downer (v-regandowner)]

Michele Martin (@msmimart)

Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team