message: Remove the extra period in _validate_args (data_adapter.py)'s error message.
diff: @@ -746,7 +746,7 @@ class DatasetAdapter(DataAdapter):
  if size == cardinality.INFINITE and steps is None:
  raise ValueError(
  "When providing an infinite dataset, you must specify "
  - "the number of steps to run (if you did not intend to ."
  + "the number of steps to run (if you did not intend to "
  "create an infinite dataset, make sure to not call "
  "`repeat()` on the dataset).")
  