Documentation: Database integration installation command

[dbelavy]

In the documentation:

https://dspy-docs.vercel.app/docs/quick-start/installation

This command fails

pip install dspy-ai[mongodb]

This one works:

pip install "dspy-ai[mongodb]"

Is it worth updating the documentation?

[tom-doerr]

I have the same issue, probably affects all Zsh users.