Fossil, the bespoke VCS used by sqlite includes a wiki & web server out of the box. It's not normally what people think of in this domain but I've used it for that purpose and it works great for it. https://fossil-scm.org
Yes, while technically speaking they are not wiki in traditional sense, they are based on Git thus collaborative editing is feasible and combined with friendly interface of TinaCMS in which Tinasaurus is based on, it can be a modern Wiki version on steroid i.e lean and fast wiki
Personally I would prefer a wiki with git backend. I wrote one [1] but I dont recommend using it.
https://github.com/entropie/oy