Enhance docstring for get_robot_part method (#1023)

Author: npentrel

src/viam/app/app_client.py

@@ -1272,13 +1272,15 @@ async def get_robot_parts(self, robot_id: str) -> List[RobotPart]:
         return [RobotPart.from_proto(robot_part=part) for part in response.parts]
 
     async def get_robot_part(self, robot_part_id: str, dest: Optional[str] = None, indent: int = 4) -> RobotPart:
-        """Get a machine part.
+        """Get a machine part including its part config, part address, and other information.
 
         ::
 
             my_robot_part = await cloud.get_robot_part(
                 robot_part_id="abc12345-1a23-1234-ab12-a22a22a2aa22"
             )
+            # Get the part's config
+            machine_part_config = my_robot_part.robot_config
             # Get the part's address
             address = my_robot_part.fqdn
             # Check if machine is live (last access time less than 10 sec ago)