Changing metadata of repo redirects to 404

[NickPfeiffer]

When on the starting page of a repo there is a settings icon next to "About", if you click that you will get the "Edit repository details".
If you now change something in there and click "Save changes" you will be redirected to a https://github.com/userName/repoName/settings/update_meta which is a 404 with a "Your repository details have been saved." message at the top.
You should just stay on the repo page and get the message there.