Merge pull request #379 from tiffanyec/minor_fixes

Minor edit to ur_msgs installation in 3.1

gh_pages/_source/demo1/4-Initialization-and-global-variables.rst

@@ -11,7 +11,7 @@ Application Variables
 
 Open the file :file:`pick_and_place_utilities.h` in the following directory:
 
-.. code-block:: bash
+.. code-block:: cpp
 
   [workspace source directory]/pick_and_place_application/include/pick_and_place_application/
 

gh_pages/_source/session3/ros2/1-Workcell-XACRO.md

@@ -35,8 +35,10 @@ Specifically, you will need to:
        cd ~/ros2_ws/src
        git clone -b foxy https://github.com/UniversalRobots/Universal_Robots_ROS2_Driver.git
        git clone -b master https://github.com/UniversalRobots/Universal_Robots_Client_Library.git
-       git clone -b ros2 https://github.com/destogl/ur_msgs.git
+       sudo apt install ros-foxy-ur-msgs
        cd ~/ros2_ws
+       rosdep update
+       rosdep install --ignore-src --from-paths src -y -r
        colcon build
        ```
 
@@ -130,4 +132,4 @@ Specifically, you will need to:
     * Try moving the joint sliders in the separate GUI window that appears to see the UR5 robot move.
 
 ## Challenge Exercise
-* Try adding another instance of the robot model in the scene in a different position and orienatation. 
+* Try adding another instance of the robot model in the scene in a different position and orienatation.