Reportedly, ox-md is somehow responsible for ox-gfm generating a TOC with
anchors.  Don't quote me on that.  I don't believe it either.

Facts I actually believe:   ox-gfm will generate a github flavor table if I
just set `toc' to `t' at the top of my readme.  However, if I try to create
a partial TOC, as I have done with dslide, the normal ox-md behavior
returns and I get vanilla markdown links.

First report on ox-gfm:  https://github.com/larstvei/ox-gfm/issues/51

You can see my toc settings here:
https://raw.githubusercontent.com/positron-solutions/dslide/refs/heads/master/doc/README.org

This is the line I'm using to generate a TOC at a specific point in the
document:
#+toc: headlines 2

What I'm looking for is vague understanding of where the problem might
actually be and what pieces of code the solution might touch.  I haven't
touched org's exporters much and don't know where to start.