That's just how Augeas refers internally to the files.
@kalon33 Can you please show the conf file /etc/apache2/httpd.conf? I'm thinking it includes a line like:
Include /etc/apache2/sites-enabled/*
Not sure why Augeas is not liking that. It might somehow require a .conf extension, but I can't really tell.. The Certbot "augeas lens" at certbot/certbot-apache/certbot_apache/_internal/augeas_lens/httpd.aug at 314838eb81a39b1249fff23bc5e694c3e78094d1 · certbot/certbot · GitHub has not been modified the last 4 years.. So nothing new or changed there.
Could you try changing * to *.conf, if that's also how your configuration files in sites-enabled are called at least?