The v0.36 release stopped honoring `$PAGER`. So enforce it in the
configuration (as I don't like their default pager settings).
Ideally this would be `mkIf`ed behind `my.home.pager.enable`, however it
looks like this does not work with the TOML type (does not seem to do
any `mkMerge`-ish logic).
I *still* don't really like the built-in formatting, but it's more about
its highlighting than its syntax.
Given that I default to using `delta` anyways, it doesn't _really_
matter as I don't see the default output.
