title: Djoser - Override registration
body: <p>I'm confused as to how to modify the registration endpoint for Djoser. All I would like to do is add scoped throttling to the endpoint, but I can't understand how to override it.
  This page on the docs talks about it: <a href="https://djoser.readthedocs.io/en/2.1.0/adjustment.html" rel="nofollow noreferrer">https://djoser.readthedocs.io/en/2.1.0/adjustment.html</a>
  But it seems outdated?
  How would it be done today with the UserViewSet &amp; make sure the url works as intended?</p>