docs/reference: update links to Go documentation

Go documentation moved to the `go.dev` domain;

    curl -sI https://golang.org/doc/install/source#environment | grep 'location'
    location: https://go.dev/doc/install/source

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/reference/commandline/network_inspect.md

@@ -41,7 +41,7 @@ node are shown.
 
 You can specify an alternate format to execute a given
 template for each result. Go's
-[text/template](https://golang.org/pkg/text/template/) package describes all the
+[text/template](https://pkg.go.dev/text/template) package describes all the
 details of the format.
 
 ```console