https://letsencrypt.org/docs/challenge-types/ needs to be updated. Under TLS-ALPN-01 it states that
mainstream web servers like Apache and Nginx could someday implement this
and
It’s not supported by Apache, Nginx, or Certbot, and probably won’t be soon.
In fact, Apache's mod_md supports TLS-ALPN-01, and has for over a year.
mod_md also supports HTTP-01 with .well-known/acme/challenge virtualized (no need for .well-known on disk), and DNS-01.
It's part of the httpd distribution - and the latest version is on github.