message: Cosmetic fix to AUC class docstring.
diff: @@ -1971,7 +1971,7 @@ class AUC(Metric):
  of binary classifiers. Unlike the accuracy, and like cross-entropy
  losses, ROC-AUC and PR-AUC evaluate all the operational points of a model.
  - This classes approximates AUCs using a Riemann sum: During the metric
  + This class approximates AUCs using a Riemann sum. During the metric
  accumulation phrase, predictions are accumulated within predefined buckets
  by value. The AUC is then computed by interpolating per-bucket averages. These
  buckets define the evaluated operational points.
  