chore: apply suggestions

src/control_backend/agents/communication/ri_communication_agent.py

@@ -189,6 +189,10 @@ class RICommunicationAgent(BaseAgent):
                     self.logger.warning("Unhandled negotiation id: %s", id)
 
     async def stop(self):
+        """
+        Closes all sockets.
+        :return:
+        """
         if self._req_socket:
             self._req_socket.close()
         if self.pub_socket: