Fix instructions to update the meshes

[mmwilsonbacon13]

In the notebook, one of the instructions that to update the meshes inside the system need to be updated:

cp -r /home/user/catkin_ws/src/urdf_course_exercises/my_mira_description /usr/share/gazebo/models/

should be

cp -r /home/user/catkin_ws/src/my_mira_description /usr/share/gazebo/models/

[duckfrost2]

@mmwilsonbacon13

cp -r /home/user/catkin_ws/src/urdf_course_exercises/my_mira_description /usr/share/gazebo/models/

Thanks for the correction

[duckfrost2]

Your suggestion has been pushed to production . It should now appear in the notebooks of the course. Thanks again for the detection and repot of this bug.

Keep up the RoboticsLearning!