add some doc for init()

src/check.rs

@@ -23,6 +23,20 @@ pub enum PlayerCheck {
 	Err(Vec<String>),
 }
 
+/// Initialize the check module from the Player part of the Config.
+///
+/// # Arguments
+///
+/// * config: the Player struct of Config
+///
+/// # Example
+/// ```
+/// use rude::config::Config;
+/// use rude::check;
+///
+/// let config = Config::load("config.toml").unwrap();
+/// check::init(&config.player);
+/// ```
 pub fn init(config: &Player) {
 	NAME_MIN.with(|n| *n.borrow_mut() = config.name_min);
 	NAME_MAX.with(|n| *n.borrow_mut() = config.name_max);