chore: don't append new line at the end and keep the content as it is (…

…#45)

Each time saving the file, the format result will always insert a new line at the end, which is annoying.

command/command.go

@@ -122,7 +122,7 @@ func RunCommand(
 		if err != nil {
 			return err
 		}
-		fmt.Println(string(out))
+		fmt.Print(string(out))
 	}
 
 	return nil