message: Added Reference Link to numpy.dtype
diff: @@ -686,7 +686,7 @@ def as_dtype(type_value):
  type_value: A value that can be converted to a `tf.DType` object. This may
  currently be a `tf.DType` object, a [`DataType`
  enum](https://www.tensorflow.org/code/tensorflow/core/framework/types.proto),
  - a string type name, or a `numpy.dtype`.
  + a string type name, or a [`numpy.dtype`](https://numpy.org/doc/stable/reference/generated/numpy.dtype.html).
  Returns:
  A `DType` corresponding to `type_value`.
  