Describe the bug
There is a link that seems to be no longer valid.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://docs.goauthentik.io/integrations/services/nextcloud/
2. Click on disable username changing
3. See error (Page not found)

Expected behavior
I was directed to a valid page.

Screenshots

Additional context
The correct link is https://docs.goauthentik.io/docs/sys-mgmt/settings#allow-users-to-change-username.