Palworld Comment Typo Fix

Fixing a typo in the comments for the Palworld protocol

Author: swesner411

opengsq/protocols/palworld.py

@@ -22,8 +22,8 @@ def __init__(self, host: str, port: int, api_username: str, api_password: str, t
 
         :param host: The host of the server.
         :param port: The port of the server.
-        :param app_username: The application username.
-        :param app_password: The application password.
+        :param api_username: The API username.
+        :param api_password: The API password.
         :param timeout: The timeout for the server connection.
         """