Added Flow Trace section header

[prmerger-automator[bot]]

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

[learn-build-service-prod[bot]]

Learn Build status updates of commit e332ff8:

:white_check_mark: Validation status: passed

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[Jak-MS]

@vhorne 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

[vhorne]

@sujamiya In the future, make your changes in the azure-docs-pr repo. That way you'll get the built-in quality checks associated with that repo and you won't need my sign-off to get a merge.

sign-off

[learn-build-service-prod[bot]]

Learn Build status updates of commit 6c3b6ce:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/firewall/monitor-firewall-reference.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel