message: corrects path for interactive marker
diff: <rosparam command="load" file="$(find franka_example_controllers)/config/franka_example_controllers.yaml" />
  <node name="controller_spawner" pkg="controller_manager" type="spawner" respawn="false" output="screen" args="cartesian_impedance_example_controller --shutdown-timeout 2"/>
  <node pkg="rviz" type="rviz" output="screen" name="rviz" args="-d $(find franka_description)/rviz/franka_description.rviz"/>
  - <node name="interactive_target" pkg="franka_emika_example_controllers" type="launch/scripts/interactive_target.py" required="true" output="screen" />
  + <node name="interactive_marker" pkg="franka_example_controllers" type="interactive_marker.py" required="true" output="screen" />
  + <node name="rqt_reconfigure" pkg="rqt_reconfigure" type="rqt_reconfigure" required="false" />
  </group>
  </launch>
  