style(pre-commit): autofix

Author: pre-commit-ci[bot]

perception/radar_crossing_objects_noise_filter/README.md

@@ -52,6 +52,7 @@ To filter the objects crossing to ego vehicle, this package filter the objects a
 ```
 
 ## Interface
+
 ### Input
 
 - `~/input/objects` (`autoware_auto_perception_msgs/msg/DetectedObjects.msg`)