Update Docs to reflect that SQL Server VectorStore Connector is now available

[rwjdk]

• Updated 'TOC'
• Updated 'Overview' from "Planned" to ✅
• Added 'Using the Semantic Kernel SQL Server Vector Store connector (Preview)' landing page

[learn-build-service-prod]

Learn Build status updates of commit 665b5e0:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/sql-server-connector.md	⚠️Warning		Details
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/index.md	✅Succeeded
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/TOC.yml	✅Succeeded

semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/sql-server-connector.md

• Line 5, Column 9: [Warning: author-not-found - See documentation] Invalid value for author: 'rwj-dk' is not a valid GitHub ID.
• Line 8, Column 10: [Warning: ms-date-invalid - See documentation] Invalid date format for 'ms.date': '22/03/2025'. If specified, must be a date in format M/D/YYYY, no more than 30 days from today. If you don't specify ms.date, the date will be updated automatically.
• Line 63, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Coming soon''. Each second level heading (H2) in an article must be unique.
• Line 72, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Coming soon''. Each second level heading (H2) in an article must be unique.
• Line 118, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Coming soon''. Each second level heading (H2) in an article must be unique.
• Line 124, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Coming soon''. Each second level heading (H2) in an article must be unique.
• Line 7, Column 12: [Suggestion: ms-author-invalid - See documentation] Invalid value for 'ms.author', 'sophialagerkranspandey' is not a valid Microsoft alias.

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[rwjdk]

@microsoft-github-policy-service agree

[learn-build-service-prod]

Learn Build status updates of commit ae022bd:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/sql-server-connector.md	⚠️Warning		Details
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/index.md	✅Succeeded
semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/TOC.yml	✅Succeeded

semantic-kernel/concepts/vector-store-connectors/out-of-the-box-connectors/sql-server-connector.md

• Line 2, Column 1: [Warning: ms-author-missing - See documentation] Missing required attribute: 'ms.author'. Add the current author's Microsoft alias.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel