Fixed source install steps to generate once prior to symlinking.

Author: tonybaltovski

docs_versioned_docs/version-ros2humble/ros/installation/robot.mdx

@@ -292,7 +292,7 @@ sudo systemctl daemon-reload && sudo systemctl start clearpath-robot.service
   Clearpath robot services can now be installed with the following command:
 
   ```
-  source /opt/ros/humble/setup.bash
+  ros2 run clearpath_generator_robot generate_launch
   ros2 run clearpath_robot install
   sudo systemctl enable clearpath-robot
   ```

docs_versioned_docs/version-ros2jazzy/ros/installation/robot.mdx

@@ -362,7 +362,7 @@ sudo systemctl daemon-reload && sudo systemctl start clearpath-robot.service
   Clearpath robot services can now be installed with the following command:
 
   ```
-  source /opt/ros/jazzy/setup.bash
+  ros2 run clearpath_generator_robot generate_launch
   ros2 run clearpath_robot install
   sudo systemctl enable clearpath-robot
   ```