Update azure-virtual-network-limits.md for improved clarification on VNet TAP limits

[bmstarling]

Modifying line 49 to clarify limit of 10 virtual network TAP configurations per subscription, not per VNet.

[prmerger-automator[bot]]

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

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

Learn Build status updates of commit 6745c29:

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[ktoliver]

@ramandhillon84

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