message: [tf.data service] Fix tense in error message.
  Now it will say "Failed to check" instead of "Failed to checking".
diff: @@ -268,7 +268,7 @@ Status DataServiceDispatcherClient::EnsureInitialized() {
  }
  return Status::OK();
  },
  - "checking service version",
  + "check service version",
  /*deadline_micros=*/kint64max));
  if (resp.version() != kDataServiceVersion) {
  return errors::FailedPrecondition(
  