I'm not sure why you would need this. Even if you don't have a CMS set up, it's fairly easy to show someone what parts of the HTML they need to copy and paste if you already have some FAQ's, or just write it up and assign a ticket to a dev and have them knock it out in a few minutes.
Who's the target market here? Most site owners usually have a tech person they can reach out to to help them with things like this.