message: Fixing up some minor doc nits for tf.lookup
diff: @@ -458,7 +458,7 @@ class DatasetInitializer(TableInitializerBase):
  """
  def __init__(self, dataset):
  - """Creates a table initializser from a `tf.data.Dataset`.
  + """Creates a table initializer from a `tf.data.Dataset`.
  Args:
  dataset: A `tf.data.Dataset` object that produces tuples of scalars. The
  @@ -633,8 +633,7 @@ class TextFileInitializer(TableInitializerBase):
  >>> init = tf.lookup.TextFileInitializer(
  ... filename=f.name,
  ... key_dtype=tf.string, key_index=tf.lookup.TextFileIndex.WHOLE_LINE,
  - ... value_dtype=tf.int64, value_index=tf.lookup.TextFileIndex.LINE_NUMBER,
  - ... delimiter=" ")
  + ... value_dtype=tf.int64, value_index=tf.lookup.TextFileIndex.LINE_NUMBER)
  >>> table = tf.lookup.StaticHashTable(init, -1)
  >>> table.lookup(tf.constant('palmer 30')).numpy()
  2
  