broken links to non-existant man pages

[tdhock]

for example https://1-merge--animint-manual-en.netlify.app/ch06/ch06-other#geom-text-aligned

some links actually do work like animint() in this section https://animint-manual-fr.netlify.app/ch02/ch02-viz#rendering-with-animint which links to github pages, https://animint.github.io/animint2/reference/animint.html

however we have plans to move from github pages to netlify animint/animint2#161

we should turn off this auto linking, or fix it.
maybe one of these options? https://quarto.org/docs/reference/formats/html.html#links