Reported by MSavoritias <email@msavoritias.me> in #74992 "guix import go
package definition is not valid". This change fixes it: instead of
"#:go 1.22" will produce "#:go go-1.22".
* guix/import/go.scm (go-module->guix-package): Fix format for #:go key
argument.
Change-Id: I9db0688b8e2970f5e90b415966d39b45505b7c8e