Update scan-images-defender.md

[mosuhail-vm]

MDC engineering team confirmed that ARM audience token is required for Defender to scan Images in ACR.

Defender doesnt scan the image if they use Microsoft Entra ACR Audience tokens

[prmerger-automator]

@mosuhail-vm : 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 f3951fc:

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File	Status	Preview URL	Details
articles/container-registry/scan-images-defender.md	✅Succeeded

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[v-dirichards]

Suggested change

	> For Microsoft Defender for Cloud to scan images in ACR, [**Authentication-as-arm**](container-registry-disable-authentication-as-arm.md) should be enabled
	> For Microsoft Defender for Cloud to scan images in ACR, [**Authentication-as-arm**](container-registry-disable-authentication-as-arm.md) should be enabled.

adding end punctuation

[v-dirichards]

@chasedmicrosoft

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

[mosuhail-vm]

@chasedmicrosoft Could you please review this PR.

[v-dirichards]

@chasedmicrosoft Could you review this proposed update to your article and enter #sign-off in a comment if it's ready to merge?

Thanks!

[Copilot]

Pull Request Overview

This PR adds a documentation note clarifying that ARM audience token authentication must be enabled for Microsoft Defender for Cloud to properly scan container images in Azure Container Registry (ACR).

• Added a note section explaining the ARM authentication requirement for Defender scanning

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[Copilot]

The link text 'Authentication-as-arm' doesn't clearly describe what it links to. Consider using more descriptive text like 'ARM audience token authentication' to match the terminology used in the PR description.

Suggested change

	> For Microsoft Defender for Cloud to scan images in ACR, [**Authentication-as-arm**](container-registry-disable-authentication-as-arm.md) should be enabled
	> For Microsoft Defender for Cloud to scan images in ACR, [**ARM audience token authentication**](container-registry-disable-authentication-as-arm.md) should be enabled

[v-dirichards]

@chasedmicrosoft

Can you review this old PR and determine whether it needs to be closed or merged?

@MicrosoftDocs/public-repo-pr-review-team