#3538: issue: 'https://docs.trychroma.com/embeddings' hyperlink is …

[CellCS]

…not working. Fix: update with using 'https://docs.trychroma.com/guides/embeddings'

Why are these changes needed?

Hyperlink of chroma_embeddings does not work anymore, update with 'https://docs.trychroma.com/guides/embeddings'

Related issue number

#3538

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.
  @microsoft-github-policy-service agree

[CellCS]

@microsoft-github-policy-service agree

@microsoft-github-policy-service agree

[thinkall]

Thanks for the PR.