API Terminology

A section (probably in the main README) defining the appropriate terminology for the Pterodactyl and Wings APIs, as well as clarifications for incorrect or misinterpreted terms.

Start by reviewing the main README and the existing Markdown documentation for references to the Pterodactyl and Wings APIs. Identify the terminology that needs definition or clarification, then document the agreed meanings and verify that the section addresses incorrect or commonly misinterpreted terms.

索引モデルが issue の本文から書いたものです。