fix: 修复gif图片显示问题

docs/humble/chapt16/6.做个遥控车-订阅ROS2Twist.md

@@ -163,7 +163,7 @@ ros2 run teleop_twist_keyboard teleop_twist_keyboard
 
 接着按下入`JKL，`几个按键，看一下小车是否动了起来。
 
-![control_car](../../../../../%E8%A7%86%E9%A2%91/control_car.gif)
+![control_car](6.%E5%81%9A%E4%B8%AA%E9%81%A5%E6%8E%A7%E8%BD%A6-%E8%AE%A2%E9%98%85ROS2Twist/imgs/control_car.gif)
 
 ## 四、总结