Clearing up return type of move_group.go() (#721)

Author: NFiedler

doc/move_group_python_interface/scripts/move_group_python_interface_tutorial.py

@@ -229,11 +229,12 @@ def go_to_pose_goal(self):
         move_group.set_pose_target(pose_goal)
 
         ## Now, we call the planner to compute the plan and execute it.
-        plan = move_group.go(wait=True)
+        # `go()` returns a boolean indicating whether the planning and execution was successful.
+        success = move_group.go(wait=True)
         # Calling `stop()` ensures that there is no residual movement
         move_group.stop()
         # It is always good to clear your targets after planning with poses.
-        # Note: there is no equivalent function for clear_joint_value_targets()
+        # Note: there is no equivalent function for clear_joint_value_targets().
         move_group.clear_pose_targets()
 
         ## END_SUB_TUTORIAL