Update documentation for wildcard usage in conditions

[rfernandezdo]

Clarify usage of wildcard character in 'contains' and 'notContains' conditions.

[Copilot]

Pull Request Overview

This PR updates documentation to clarify wildcard character usage in policy rule conditions, specifically distinguishing between contains/notContains and like/notLike conditions.

• Added clarification that wildcard characters (*) cannot be used in contains and notContains conditions

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[prmerger-automator]

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

[learn-build-service-prod]

Learn Build status updates of commit 7d8d29d:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/governance/policy/concepts/definition-structure-policy-rule.md	✅Succeeded

For more details, please refer to the build report.

[v-dirichards]

@rmcmurray

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