rename flat_values->flatValues in output of match telemetry

common/python/nomadcore/parser_backend.py

@@ -245,7 +245,7 @@ class JsonParseEventsWriterBackend(object):
             'lineNr': match_telemetry['lineNr'],
             'matcherName': match_telemetry['matcherName'],
             'matchFlags': match_telemetry['matchFlags'],
-            'flat_values': match_telemetry['span_flat'],
+            'flatValues': match_telemetry['span_flat'],
             'group': match_telemetry['group'],
         }
         self.__jsonOutput(res)