Update dlsv6-series.md

[bansal-misha]

Removing 'preview' from URL title as the series has GA'd

[prmerger-automator]

@bansal-misha : 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 d8835e0:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/virtual-machines/sizes/general-purpose/dlsv6-series.md	✅Succeeded

For more details, please refer to the build report.

[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

[bansal-misha]

#sign-off

[prmerger-automator]

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

[v-dirichards]

Hi @bansal-misha - Thanks for your review. In the public repo, pull requests should be signed off by the author, another member of the content team, or a PM. You could pull this PR into the private repo and sign off on it there.

---

@mattmcinnes Could you take a look? Thanks!