just a personal preference running so much software and so many machines I like all my configuration files to use a recognizable extension yaml, json,toml... and in the case of a configuration file format particular to some software .conf or .cfg thus caddy.conf. Now that I can I’ll probably export as json and convert it to yaml since prefer that format and my ide supports syntax highlighting and linting for yaml.
But hey once I write that new super cool web frontend for the V2 api goodbye any manually edited configuration file.