API /notifications.json has field ..._url but shows ..._path

[BWindey]

When looking at the output of dodona.be/notifications.json, I notice that the field "notifiable_url" does not contain a url, but a path (doesn't contain "https://dodona.be").
This is inconsistent with other json pages.

The 2 files that create the result:
https://github.com/dodona-edu/dodona/blob/main/app/views/notifications/_notification.json.jbuilder#3
https://github.com/dodona-edu/dodona/blob/main/app/helpers/notifications_helper.rb#9