Update workload-identity-overview.md

[miqm]

Changed description of skip-containers annotation. The pod is labeled with azure.workload.identity/use: true, not the service account.

[prmerger-automator]

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

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[Jak-MS]

@cynthn
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

[cynthn]

@Jak-MS I'm not on the AKS team. The last one that was assigned to me was picked up by @schaffererin :)

[Jak-MS]

@schaffererin - can you review? (also, if you could update the author metadata on articles that belonged to @tamram - that would be very helpful.) thanks!