Since it’s an upgrade of markdown, you should have called it "markup".
"updoc" is still my favourite joke name. A long time ago (predating E lang's updoc afaict) I wrote a toy markup for semi-technical docs, named so with the specific intention of dropping it casually into conversation. Still funny :D
Price accordingly.
This sounds to me like it might benefit from some sort of "hypertext" functionality to allow for easy linking of documents