Fix module_commands.py example

Not sure where it got broken along the line, but this fixes it.

Author: tleonhardt

examples/modular_commands.py

@@ -7,10 +7,10 @@
 import argparse
 from collections.abc import Iterable
 
-from modular_commands.commandset_basic import (  # noqa: F401
+from modular_commands.commandset_basic import (
     BasicCompletionCommandSet,
 )
-from modular_commands.commandset_complex import (  # noqa: F401
+from modular_commands.commandset_complex import (
     CommandSetA,
 )
 from modular_commands.commandset_custominit import (
@@ -64,6 +64,6 @@ def do_example(self, _: argparse.Namespace) -> None:
     import sys
 
     print("Starting")
-    my_sets = [CustomInitCommandSet('First argument', 'Second argument')]
+    my_sets = [BasicCompletionCommandSet(), CommandSetA(), CustomInitCommandSet('First argument', 'Second argument')]
     app = WithCommandSets(command_sets=my_sets)
     sys.exit(app.cmdloop())