Settings, Instance, Frontend warning header update

This form can be used to configure a keyword list that keeps the configuration data for any kind of frontend. By default, settings for pleroma_fe and masto_fe are configured. If you want to add your own configuration your settings need to be complete as they will override the defaults.

We should say

... If you want to add your own configuration your settings all fields must be complete.

And are we able to throw an error if there are any empty freeform/text fields here?