Wrong package name in Gazebo 9 install guide
The page can be found on https://source.coderefinery.org/rmurv2-2020/reference_solutions/-/blob/master/19%20Gazebo%20and%20RotorS/ex01_gazebo_and_rotors_installation_guide.md.
There is a mistake in the line describing which packages one should install for rotorS. The following changes should be made:
melodic-octomap-msgs -> ros-melodic-octomap-msgs
melodic-octomap -> ros-melodic-octomap
Edited by Emil Lykke Diget