Rendered Markdown relative links resolve outside the repository

open   by a73x

The README links to `pi-repl/`, but on https://git.a73x.sh/pi.git the rendered link navigates to https://git.a73x.sh/pi-repl/ instead of the `pi-repl` folder within `pi.git`.

Expected: relative Markdown links resolve relative to the source file/repository path (for example, the README link should remain under `https://git.a73x.sh/pi.git/...`).

Actual: the renderer resolves the relative link from the site root, dropping the repository path.