fixed pylint warning

mindinsight/datavisual/data_transform/ms_data_loader.py

@@ -238,10 +238,10 @@ class MSDataLoader:
                     histogram_msg = value.histogram
                     tag = '{}/{}'.format(value.tag, PluginNameEnum.HISTOGRAM.value)
                     tensor_event = TensorEvent(wall_time=event.wall_time,
-                                                step=event.step,
-                                                tag=tag,
-                                                plugin_name=PluginNameEnum.HISTOGRAM.value,
-                                                value=histogram_msg)
+                                               step=event.step,
+                                               tag=tag,
+                                               plugin_name=PluginNameEnum.HISTOGRAM.value,
+                                               value=histogram_msg)
                     self._events_data.add_tensor_event(tensor_event)
 
         if event.HasField('graph_def'):