Fix indentation for signals.py

tubesync/sync/signals.py

@@ -9,7 +9,7 @@ from background_task.signals import task_failed
 from background_task.models import Task
 from common.logger import log
 from .models import Source, Media, MediaServer
-from .tasks import (delete_task_by_source, delete_task_by_media, index_source_task,
+from .tasks import (  delete_task_by_source, delete_task_by_media, index_source_task,
                       download_media_thumbnail, download_media_metadata,
                       map_task_to_instance, check_source_directory_exists,
                       download_media, rescan_media_server, download_source_images,