message: Fix ReductionV2 documentation symbol discrepancy.
diff: @@ -44,7 +44,7 @@ class ReductionV2(object):
  loss_obj = tf.keras.losses.CategoricalCrossentropy(
  reduction=tf.keras.losses.Reduction.NONE)
  ....
  - loss = tf.reduce_sum(loss_object(labels, predictions)) *
  + loss = tf.reduce_sum(loss_obj(labels, predictions)) *
  (1. / global_batch_size)
  ```
  