Updated out of date comment

Author: anselor

cmd2/cmd2.py

@@ -772,7 +772,7 @@ def _register_subcommands(self, cmdset: Union[CommandSet, 'Cmd']) -> None:
         if not (cmdset is self or cmdset in self._installed_command_sets):
             raise CommandSetRegistrationError('Cannot register subcommands with an unregistered CommandSet')
 
-        # find all methods that start with the subcommand prefix
+        # find methods that have the required attributes necessary to be recognized as a sub-command
         methods = inspect.getmembers(
             cmdset,
             predicate=lambda meth: isinstance(meth, Callable)