Fix more lint errors

Author: pstephengoogle

src/a2a/server/request_handlers/grpc_handler.py

@@ -65,8 +65,8 @@ def __init__(
 
         Args:
             agent_card: The AgentCard describing the agent's capabilities.
-            request_handler: The underlying `RequestHandler` instance to delegat
-e requests to.
+            request_handler: The underlying `RequestHandler` instance to
+                             delegate requests to.
         """
         self.agent_card = agent_card
         self.request_handler = request_handler
@@ -84,10 +84,9 @@ async def SendMessage(
             context: Context provided by the server.
 
         Returns:
-            A `SendMessageResponse` object containing the result (Task or Messag
-e)
-            or throws an error response if a `ServerError` is raised by the han
-dler.
+            A `SendMessageResponse` object containing the result (Task or
+            Message) or throws an error response if a `ServerError` is raised
+            by the handler.
         """
         try:
             # Construct the server context object

src/a2a/utils/proto_utils.py

@@ -138,7 +138,7 @@ def push_notification_config(
         cls, config: types.PushNotificationConfig
     ) -> a2a_pb2.PushNotificationConfig:
         return a2a_pb2.PushNotificationConfig(
-            id=config.id or "",
+            id=config.id or '',
             url=config.url,
             token=config.token,
             authentication=ToProto.authentication_info(config.authentication),