message: Add tfa to contrib warning
diff: @@ -25,8 +25,8 @@ _CONTRIB_WARNING = (
  ast_edits.ERROR,
  "<function name> cannot be converted automatically. tf.contrib will not"
  " be distributed with TensorFlow 2.0, please consider an alternative in"
  - " non-contrib TensorFlow, a community-maintained repository, or fork "
  - "the required code."
  + " non-contrib TensorFlow, a community-maintained repository such as "
  + "tensorflow/addons, or fork the required code."
  )
  _FLAGS_WARNING = (
  