message: Make cast docstring testable.
diff: @@ -739,10 +739,9 @@ def cast(x, dtype, name=None):
  For example:
  - ```python
  - x = tf.constant([1.8, 2.2], dtype=tf.float32)
  - tf.dtypes.cast(x, tf.int32) # [1, 2], dtype=tf.int32
  - ```
  + >>> x = tf.constant([1.8, 2.2], dtype=tf.float32)
  + >>> tf.dtypes.cast(x, tf.int32)
  + <tf.Tensor: shape=(2,), dtype=int32, numpy=array([1, 2], dtype=int32)>
  The operation supports data types (for `x` and `dtype`) of
  `uint8`, `uint16`, `uint32`, `uint64`, `int8`, `int16`, `int32`, `int64`,
  