Improve documentation in rclpy.utilities (#1038)
Improve documentation in rclpy.utilities (#1038)

Signed-off-by: Shane Loretz <7fde345e8e2e22c78a1570a4807e4629866dc7de@osrfoundation.org>

Signed-off-by: Shane Loretz <7fde345e8e2e22c78a1570a4807e4629866dc7de@osrfoundation.org>
ros2/rclpy,ros2/rclpy