Clarify application acceleration details

[ravisha22]

Updated the description of application acceleration to specify unicast network routing instead of anycast, inline with the platform changes being made.

[prmerger-automator]

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Pull request overview

This PR updates the documentation for Azure's load balancing and content delivery services to clarify that application acceleration uses unicast network routing instead of anycast network, aligning with current platform capabilities.

Changes:

• Updated the application acceleration description to specify unicast network routing instead of anycast network

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[ttorble]

@ravisha22 - This pull request was opened in the public repo. PMs should work in the private repo, per the Microsoft Docs contributor guide. We can keep this PR open for review and merge, but would you make future content updates in the private repo? Thank you!

@mbender-ms

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"
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