std_msgs have been deprecated in https://github.com/ros2/common_interfaces/pull/116; why are they still being [used](https://github.com/ros2/ros2_documentation/blob/rolling/source/Tutorials/Beginner-Client-Libraries/Writing-A-Simple-Py-Publisher-And-Subscriber.rst) in the official documentation? It's hard for users to make the switch when official examples still use them FYI similar to https://github.com/ros2/examples/issues/356