fix(pterodactyl): added config key I forgot to register

pterodactyl/config.py

@@ -14,6 +14,7 @@ def register_config(config_obj: Config) -> None:
         chat_regex=r"\[(\d{2}:\d{2}:\d{2})\sINFO\]:\s<(\w+)>\s(.*)",
         server_regex=r"^\[\d{2}:\d{2}:\d{2} INFO\]: \[Not Secure\] \[.*\] (.*)",
         join_regex=r"^\[\d{2}:\d{2}:\d{2} INFO\]: ([^<\n]+) joined the game$",
+        leave_regex=r"^\[\d{2}:\d{2}:\d{2} INFO\]: ([^<\n]+) left the game$",
         chat_command='tellraw @a ["",{"text":".$U ","color":".$C"},{"text":" (DISCORD): ","color":"blue"},{"text":".$M","color":"white"}]',
         api_endpoint="minecraft",
         chat_channel=None,