update README.md.

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武博文 2023-10-07 13:12:31 +00:00 committed by Gitee
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#### 使用说明 #### 使用说明
1. xxxx 在最外层目录 catkin_make
可能需要 source ./devel/setup.bash
1. roslaunch librviz_tutorial laser.launch
2. xxxx 2. xxxx
3. xxxx 3. xxxx