Update cloud-microsoft-domain.md

[crsierrav]

Removing Viva Skills from the list of services since it has regressed.

[learn-build-service-prod]

Learn Build status updates of commit bd085e8:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-365/enterprise/cloud-microsoft-domain.md	✅Succeeded

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For any questions, please:

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[garycentric]

@crsierrav As someone with Microsoft credentials, you should be working in the private repos, such as microsoft-365-docs-pr. Pull requests in the private repos have more complete checks, preview links, a shorter path to publication. Also, in private repos, comments and discussion are private, not public.

Please check whether you've completed the steps in Set up your accounts in the authoring guide, and then follow the links in Next steps in that article.