message: Fix docstring format and typo in metrics.py.
diff: @@ -2000,7 +2000,7 @@ class AUC(Metric):
  case, when multilabel data is passed to AUC, each label-prediction pair
  is treated as an individual data point. Should be set to False for
  multi-class data.
  - num_labels: (Optional) The number of labels, used when `multi_label' is
  + num_labels: (Optional) The number of labels, used when `multi_label` is
  True. If `num_labels` is not specified, then state variables get created
  on the first call to `update_state`.
  label_weights: (Optional) list, array, or tensor of non-negative weights
  @@ -2024,7 +2024,7 @@ class AUC(Metric):
  >>> m.update_state([0, 0, 1, 1], [0, 0.5, 0.3, 0.9])
  >>> # threshold values are [0 - 1e-7, 0.5, 1 + 1e-7]
  >>> # tp = [2, 1, 0], fp = [2, 0, 0], fn = [0, 1, 2], tn = [0, 2, 2]
  - >>> # recall = [1, 0.5, 0], fp_rate = [1, 0, 0]
  + >>> # tp_rate = recall = [1, 0.5, 0], fp_rate = [1, 0, 0]
  >>> # auc = ((((1+0.5)/2)*(1-0)) + (((0.5+0)/2)*(0-0))) = 0.75
  >>> m.result().numpy()
  0.75
  