fix format

Author: cyy12345

src/a2a/client/transports/jsonrpc.py

@@ -147,13 +147,13 @@ async def send_message_streaming(
             context,
         )
 
-        modified_kwargs.setdefault('timeout', self.httpx_client.timeout.as_dict().get('read', None))
+        modified_kwargs.setdefault(
+          'timeout', self.httpx_client.timeout.as_dict().get('read', None)
+        )
         headers = dict(self.httpx_client.headers.items())
         headers.update(modified_kwargs.get('headers', {}))
         modified_kwargs['headers'] = headers
 
-
-
         async with aconnect_sse(
             self.httpx_client,
             'POST',