fix(tests): outdated test for main

Author: FlysonBot

tests/main/test_main.py

@@ -69,7 +69,7 @@ def test_new_game_menu_ai_vs_human(self, mock_print, mock_get_option):
         main_ui = MainUI()
         self.assertTrue(main_ui.new_game_menu())
         mock_get_option.assert_called_once()
-        mock_print.assert_called_once_with("This feature  is not implemented yet.")
+        mock_print.assert_called_once_with("This feature is not implemented yet.")
 
     @patch(
         "mastermind.ui.menu.NewGameMenu.get_option", return_value="Return to Main Menu"