Update golang links to use https (#28980)

Many of the golang links point to the old site and don't use https. This
pull request updates these outdated links to https://go.dev .

https://github.com/go-gitea/gitea/issues/28979

docs/content/development/hacking-on-gitea.en-us.md

@@ -25,7 +25,7 @@ To get a quick working development environment you could use Gitpod.
 
 ## Installing go
 
-You should [install go](https://golang.org/doc/install) and set up your go
+You should [install go](https://go.dev/doc/install) and set up your go
 environment correctly.
 
 Next, [install Node.js with npm](https://nodejs.org/en/download/) which is