Add copyright example

source/Tutorials/Advanced/Ament-Lint-For-Clean-Code.rst

@@ -81,8 +81,11 @@ Using the ``--verbose`` option will list all checked files.
 .. code-block:: console
 
   ament_copyright --verbose
+  my_package/src/new_file.cpp: could not find copyright notice
+  my_package/src/old_file.cpp: copyright=Open Source Robotics Foundation, Inc. (2023), license=apache2
+  my_package/include/new_file.h: could not find copyright notice
+  my_package/include/old_file.h: copyright=Open Source Robotics Foundation, Inc. (2023), license=apache2
 
-If you happen to find an issue with one of your files you can address it by calling the following command.
 
 2 ``ament_cppcheck``
 ^^^^^^^^^^^^^^^^^^^^