Fix panda_moveit_config link

Author: rhaschke

doc/moveit_cpp/src/moveit_cpp_tutorial.cpp

@@ -207,7 +207,7 @@ int main(int argc, char** argv)
   // We can set the goal of the plan using the name of a group states
   // for panda robot we have one named robot state for "panda_arm" planning group called "ready"
   // see `panda_arm.xacro
-  // <https://github.com/ros-planning/panda_moveit_config/blob/melodic-devel/config/panda_arm.xacro#L13>`_
+  // <https://github.com/ros-planning/panda_moveit_config/blob/noetic-devel/config/arm.xacro#L13>`_
 
   /* // Set the start state of the plan from a named robot state */
   /* planning_components->setStartState("ready"); // Not implemented yet */