message: [tf.data] Improve docstring for `tf.contrib.data.Counter`.
diff: @@ -25,7 +25,7 @@ from tensorflow.python.framework import ops
  def Counter(start=0, step=1, dtype=dtypes.int64):
  - """Creates a `Dataset` of a `step`-separated count startin from `start`.
  + """Creates a `Dataset` that counts from `start` in steps of size `step`.
  For example:
  @@ -38,12 +38,13 @@ def Counter(start=0, step=1, dtype=dtypes.int64):
  ```
  Args:
  - start: starting value for count.
  - step: step size.
  - dtype: counter data type.
  + start: (Optional.) The starting value for the counter. Defaults to 0.
  + step: (Optional.) The step size for the counter. Defaults to 1.
  + dtype: (Optional.) The data type for counter elements. Defaults to
  + `tf.int64`.
  Returns:
  - A `Dataset` of scalar elements.
  + A `Dataset` of scalar `dtype` elements.
  """
  with ops.name_scope("counter"):
  start = ops.convert_to_tensor(start, dtype=dtype, name="start")
  