message: Update docstring for sequence_feature_column
diff: @@ -371,6 +371,12 @@ def sequence_numeric_column(
  default_value: A single value compatible with `dtype` that is used for
  padding the sparse data into a dense `Tensor`.
  dtype: The type of values.
  + normalizer_fn: If not `None`, a function that can be used to normalize the
  + value of the tensor after `default_value` is applied for parsing.
  + Normalizer function takes the input `Tensor` as its argument, and returns
  + the output `Tensor`. (e.g. lambda x: (x - 3.0) / 4.2). Please note that
  + even though the most common use case of this function is normalization, it
  + can be used for any kind of Tensorflow transformations.
  Returns:
  A `_SequenceNumericColumn`.
  