Correct syntax

Author: bouwew

plugwise_usb/__init__.py

@@ -206,7 +206,7 @@ def accept_join_request(self, state: bool) -> None:
             )
 
         self._network.accept_join_request = state
-        create_task(self._network.allow_join_requests(state))
+        task = create_task(self._network.allow_join_requests(state))
 
     async def clear_cache(self) -> None:
         """Clear current cache."""