docs(langchin Integration): update README link to Chroma vectorstore …

[MohammedHassan07]

Description of changes

Updated a documentation link for the Chroma integration in LangChain JavaScript.

Changed the existing link to point directly to the Chroma integration in LangChain JavaScript documentation for better navigation and relevance.

Changes made

• Updated LangChain JavaScript documentation link:
  • From: https://docs.langchain.com/oss/javascript/langchain/overview
  • To: https://docs.langchain.com/oss/javascript/integrations/vectorstores/chroma

Test plan

• Verified the updated documentation link works correctly.
• Confirmed the link redirects to the appropriate LangChain JavaScript documentation page.

Migration plan

No migration or compatibility changes required.

Observability plan

No observability changes required for this documentation update.

Documentation Changes

• Updated documentation for the Chroma integration in LangChain JavaScript.

[github-actions]

Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)