Just checked with the module dev and apparently V Rising WILL parse \n. However, AMP escapes \n into \\n in order to store it. You can stop the server and edit the file manually to add \n. However, when you edit a value inside the ADS, it will overwrite the config. This is what I was told:
For now the user can go into the configmanifest.json and remove the section for Description and do it by hand in the game’s config file.
hence they’d have to do this. And remove the description from App.AppSettings in the GenericModule.kvp.
This will remove the Description configuration field and allow you to edit it manually without AMP overwriting it. However, if the V Rising module gets an update later, you will have to do this again.