Unless there's some way to auto-update the document without human intervention.
That's a good idea. I remember back when I was coding (so way before AIs became popular) there were tools that extracted the parameters of the functions defined in a module or class and created the base documentation for it, remaining for a human to actually add comments regarding the proper use of each parameter and examples of usage, on top of their name and type which were extracted automatically.
Right, it's possible a second or third iteration of that can be made with AI, and a human can review it every week or two to make sure the documentation is well updated.
Well, that was best suited for software development documentation. For users of DEXes, a different kind of documentation is needed based on describing features and FAQs. I'm not sure if an AI can be trained to write and update part of this kind of documentation or if it can, if it's worth it. Maybe an AI that records human actions (like those of testers or support crew) in the UI and is able to describe those action in words, either written or spoken.