Steps to reproduce:
Search for Go documentation with e.g. !golang filepath. This will redirect you to https://go.dev/search?q=filepath which is a 404. The Go documentation is at pkg.go.dev, not go.dev (this might have changed at some point, I don't remember).
Expected behavior:
!golang should send you to pkg.go.dev/search instead of the broken go.dev/search.
Debug info:
Firefox, Ubuntu
