修正py依赖与py文件后缀名的提交

docs/humble/chapt3/get_started/9.自定义接口RCLPY实战.md

@@ -11,8 +11,8 @@
 
 ```sherll
 cd chapt3_ws/
-ros2 pkg create example_interfaces_rclpy --build-type ament_python --dependencies rclcpp example_ros2_interfaces --destination-directory src --node-name example_interfaces_robot_02 --maintainer-name "fishros" --maintainer-email "fishros@foxmail.com"
-touch src/example_interfaces_rclpy/src/example_interfaces_control_02,
+ros2 pkg create example_interfaces_rclpy --build-type ament_python --dependencies rclpy example_ros2_interfaces --destination-directory src --node-name example_interfaces_robot_02 --maintainer-name "fishros" --maintainer-email "fishros@foxmail.com"
+touch src/example_interfaces_rclpy/src/example_interfaces_control_02.py
 ```
 
 setup.py
@@ -213,4 +213,4 @@ ros2 run example_interfaces_rclpy example_interfaces_control_02
 
 ![image-20220612105944206](9.自定义接口RCLPY实战/imgs/image-20220612105944206.png)
 
-![image-20220612110007991](9.自定义接口RCLPY实战/imgs/image-20220612110007991.png)
+![image-20220612110007991](9.自定义接口RCLPY实战/imgs/image-20220612110007991.png)