Fix size typos from _v42 to _v4

[abdkha]

No description provided.

[prmerger-automator]

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[learn-build-service-prod]

Learn Build status updates of commit 8350b54:

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File	Status	Preview URL	Details
articles/virtual-machines/sizes/general-purpose/dasv4-series.md	✅Succeeded

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[Copilot]

Pull Request Overview

This PR corrects typos in the DASv4 series virtual machine documentation by fixing incorrect VM size names from "Standard_D2as_v42" to "Standard_D2as_v4" throughout the specification tables.

• Fixes typos in VM size names across four specification tables
• Ensures consistency with the correct DASv4 series naming convention
• Updates documentation accuracy for Azure VM specifications

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[v-dirichards]

@mattmcinnes

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

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[abdkha]

Hi @mattmcinnes
Awaiting your review. Any updates?

[abdkha]

#sign-off

[prmerger-automator]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @mattmcinnes

[github-actions]

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