GitLab

* Fix bug in example and add to tests

* Fix failing tests

* Check the size of logits

* Code style

* Try again...

* Add expected loss for PerceiverForMaskedLM doctest
Co-authored-by: Steven Anton <antonstv@amazon.com>
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>