Those are fields used by the language switcher to correlate pages across
different languages, even if they have different names/paths/titles.
They are generated with the prepare_for_translation.py script.
- mark all code blocks with ```
- unify empty lines between sections
- adjust list syntax (no space before dash)
- adjust headers to use Atx-style syntax
- remove trailing spaces
VMs whose backup size exceeds 100 GiB have more than a thousand chunks,
i.e. private.img.999 is succeeded by private.img.1000 and so on. Ensure
that these are all processed, and in the right numerical order.
FixesQubesOS/qubes-issues#6113
