change class name

nl2bash_metric.py

@@ -78,7 +78,7 @@ _CITATION = """
 
 
 @datasets.utils.file_utils.add_start_docstrings(_DESCRIPTION, _KWARGS_DESCRIPTION)
-class ExactMatch(datasets.Metric):
+class nl2bash_metric(datasets.Metric):
     def _info(self):
         return datasets.MetricInfo(
             description=_DESCRIPTION,