adapt step name for reporting

mediametadatatodb_app/resources/reporter.py

@@ -50,7 +50,7 @@ class Reporter:
                 'id': identifier,
                 'status': status,
                 'message': message,
-                'step': 'mediametadatatodb',
+                'step': 'di-media-metadata-indexer',
                 'timestamp': timestamp
             }
             json_report = json.dumps(report)