Redirect old documentation to new URL

[traviswimer]

Improve documentation

Link

https://docs.snaplet.dev/seed/getting-started/overview

Describe the problem

The old snaplet.dev documentation site shows page with broken styling rather than redirecting to the new docs. I encountered a link to this broken documentation in the documentation of a different project. There's probably still a lot of links around pointing to the old docs.

Describe the improvement

If possible, redirect to the new docs to prevent confusion. Obviously that would be up to the owner of snaplet.dev to make the change though.