DocFx could do what you’re looking for. You would write your stuff in markdown and it generates an interactive and customizable site.

I like your optimism, but no, they are actually serious.

Sadly, yes. On the off chance you speak Dutch, here is a fact-checking article on that exact ad. I know it’s a weird thing to link articles in uncommon languages, but I came across that article recently and thought it really provided a lot of context, so I’m afraid it’s the best source I have. You can always run it through a translator too :-)