Merge branch 'flag-list-element-entities-deprecated' into 'master'

Flag ListElementEntities as deprecated

Closes #1314

See merge request !1758

arkindex/documents/api/entities.py

@@ -287,6 +287,7 @@ class TranscriptionEntities(ListAPIView):
     get=extend_schema(
         operation_id='ListElementEntities',
         tags=['entities'],
+        deprecated=True,
         parameters=[
             OpenApiParameter(
                 'worker_version',