Hi !

I am playing with FrankenPHP, and frankly new to the thing so I may be wrong.

The current documentation mention that :

/etc/frankenphp/caddy.d/*.caddy: additional configuration files that are loaded automatically

But in the main Caddyfile (here on GitHub) imports differently:

import Caddyfile.d/*.caddyfile

This PR aims to correct this :)

Thank you for your time !