add docstring

Author: czerwiukk

fishjam/agent/agent.py

@@ -152,6 +152,10 @@ async def _send(self, message: AgentRequest):
         await self._ws.send(bytes(message), text=False)
 
     async def disconnect(self):
+        """
+        Ends the agent session by closing the websocket connection.
+        Useful when you don't use the context manager to obtain the session.
+        """
         await self._ws.close()