When using an +#export_file_name directive, is it possible to have links
translated to match the directory offset of the target?

I came across this while working on a documentation generation scheme for
https://github.com/positron-solutions/elisp-repo-kit

The links in the org document are correct.  The links in the resulting
markdown are not translated, and break.

The manual has a slightly different problem.  I need to translate it as if
it will be exported to the root directory even though it's always in the
doc directory.  The links don't seem useful, and turning them off may be
more correct.  I haven't gotten a lot of experience with drafting texinfo
yet.