DATA-354 Update docstring for motion service (#144)

* DATA-354 Update docstring for motion service

* DATA-354 Incorporates feedback from njooma

Author: William Spies

src/viam/services/motion.py

@@ -38,6 +38,12 @@ async def move(
     ) -> bool:
         """Plan and execute a movement to move the component specified to its goal destination.
 
+        Note: Frames designated with respect to components can also be used as the `component_name` when calling for a move. This
+        technique allows for planning and moving the frame itself to the `destination`. To do so, simply override the `name` attribute
+        for a given resource with the originating ReferenceFrame. Then pass in the updated resource into the `component_name`. Ex:
+            resource = Arm.get_resource_name("arm")
+            resource.name = "externalFrame"
+            success = await MotionServiceClient.move(resource, ...)
 
         Args:
             component_name (ResourceName): Name of a component on a given robot.