Revert back to single quote

Signed-off-by: gatici <[email protected]>

conf/route_control.py

@@ -613,7 +613,7 @@ def _netlink_event_listener(self, netlink_message: dict) -> None:
             netlink_message (dict): The netlink message.
         """
         try:
-            event = netlink_message.get("event")
+            event = netlink_message.get('event')
         except Exception:
             logger.exception("Error parsing netlink message")
             return