Add missing docstring to wrapped function

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: adamtheturtle

src/mock_vws/_requests_mock_server/decorators.py

@@ -142,6 +142,7 @@ def _wrap_callback(
         def wrapped(
             request: PreparedRequest,
         ) -> _ResponseType:
+            """Handle the response delay and timeout logic."""
             # req_kwargs is added dynamically by the responses
             # library onto PreparedRequest objects - it is not
             # in the requests type stubs.