Update go get installation cmd to go install

`go get` is not supported on external modules, `go install` is now the cmd

README.md

@@ -65,7 +65,7 @@ For more information take a look at the [quick start](#quick-start), the [exampl
 Probably the easiest way to install `commander` is by using `go get` to download and install it in one simple command:
 
 ```bash
-go get github.com/commander-cli/commander/v2/cmd/commander
+go install github.com/commander-cli/commander/v2/cmd/commander@latest
 ```
 
 This works on any OS, as long as go is installed. If go is not installed on your system, follow one of the methods below.