New vectorstore docs

[adolkhan]

🚀 🚀 Pull Request

Impact

• [ ] Bug fix (non-breaking change which fixes expected existing functionality)
• [ ] Enhancement/New feature (adds functionality without impacting existing logic)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description

Things to be aware of

Things to worry about

Additional Context

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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