address PR comments

Author: nikhilc-microsoft

libraries/microsoft-agents-a365-observability-core/microsoft_agents_a365/observability/core/models/response.py

@@ -8,10 +8,5 @@
 class Response:
     """Response details from agent execution."""
 
+    """The list of response messages from the agent."""
     messages: list[str]
-    """The list of response messages from the agent.
-
-    Each message represents a text response generated by the agent during execution.
-    Messages are serialized to JSON format for OpenTelemetry span attributes.
-    An empty list is valid and represents no response messages.
-    """