docs: Redirect `docs/ai` to `docs/ai/overview` (#30442)

This PR adds a redirect from `zed.dev/docs/ai` to
`zed.dev/docs/ai/overview`.

Not 100% sure this will work, but want to give it a try.

Release Notes:

- N/A
bff259731fMarshall Bowers committed on 5/9/2025, 10:36:25 PM· committed by GitHubparent6c5b9b4
1 file changedLine totals unavailable