manager: Fix the spec of leo_manager_api:notify_del_dir_state/3
manager: Fix the spec of leo_manager_api:notify_del_dir_state/3

windkit/leofs,leo-project/leofs,vstax/leofs,yosukehara/leofs,leo-project/leofs,vstax/leofs,yosukehara/leofs,windkit/leofs