Fix Variable invalid-name
src/mailcow/menu.py:97:4: C0103: Variable name "m" doesn't conform to snake_case naming style (invalid-name)
src/mailcow/__init__.py:86:12: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
src/mailcow/menu.py:97:4: C0103: Variable name "m" doesn't conform to snake_case naming style (invalid-name)
src/mailcow/__init__.py:86:12: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)