refactor: wording & short options

cli/cli.go

@@ -28,10 +28,7 @@ func newAbraApp(version, commit string) *cli.App {
   | |__| (_) |_____| (_) | |_) | | |___| | (_) | |_| | (_| |
    \____\___/       \___/| .__/   \____|_|\___/ \__,_|\__,_|
                          |_|
-
-If you haven't already done so, consider setting up autocompletion for a more
-convenient command-line experience. See "abra autocomplete -h" for more.
-		`,
+`,
 		Version: fmt.Sprintf("%s-%s", version, commit[:7]),
 		Commands: []*cli.Command{
 			app.AppCommand,