Update ref-metrics.py

ref-metrics.py

@@ -124,6 +124,7 @@ class UserFriendlyMetrics(evaluate.Metric):
         
         Note:
         - If the metric does not support area ranges, the metric should store the results under the `all` key.
+        - If a range area is provided it will be displayed in the output. if area_ranges_tuples is None, then all the area ranges will be displayed
         """
         return self.dummy_values(area_ranges_tuples)