Fix ruff format: extra trailing space in comment

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: gijzelaerr

tests/test_connection.py

@@ -488,7 +488,7 @@ def test_tcp_connect_sets_keepalive_timing(self, mock_socket_mod: MagicMock, moc
         mock_socket_mod.SO_KEEPALIVE = _socket.SO_KEEPALIVE
         mock_socket_mod.IPPROTO_TCP = _socket.IPPROTO_TCP
         mock_socket_mod.TCP_NODELAY = _socket.TCP_NODELAY
-        mock_socket_mod.TCP_KEEPIDLE = 4   # simulate attribute present
+        mock_socket_mod.TCP_KEEPIDLE = 4  # simulate attribute present
         mock_socket_mod.TCP_KEEPINTVL = 5
         mock_socket_mod.TCP_KEEPCNT = 6