Update tag-support.md

[sdoultani]

Referencing tag inheritance in cost management to work around the limitation of some resources not supporting/emitting tags to be included in the cost report.

[prmerger-automator[bot]]

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

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[Court72]

@mumian

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

[mumian]

@sdoultani - thank you for your contribution.

sign-off

[Jak-MS]

label:"missed-content-complete"

label:"event-triaged-to-10AM"

This PR is ready for merge. Due to the upcoming Ignite conference, all merging and publishing is on hold until the morning of the keynote address.

The PR review team will resume merging on the morning of the keynote address for the regularly scheduled daily publish cycles. You don't need to take further action on this PR; we'll merge it on the day of the keynote address.

Don't add more commits to this reviewed PR.

Thanks.