message: Typo fix in index_lookup.py.
diff: @@ -49,7 +49,7 @@ _ACCUMULATOR_COUNTS_NAME = "counts"
  class IndexLookup(base_preprocessing_layer.CombinerPreprocessingLayer):
  """Maps strings (or integers) from a vocabulary to integer indices.
  - This layer translates a set of arbitray strings or integers into an integer
  + This layer translates a set of arbitrary strings or integers into an integer
  output via a table-based lookup, with optional out-of-vocabulary handling.
  If desired, the user can call this layer's `adapt()` method on a data set,
  