How to Implement Previews with Next Applications using a Strapi backend

I’m not seeing the article.settings.json file anywhere in my Strapi project. Is this for an older version of Strapi?

Edit: Nevermind, I created the project with the wrong command. I’m tying again now with yarn create strapi-app my-app-name --template blog to use Strapi V4 (the linked repo was for Strapi V3 so hopefully I can still make it work).