Add more documentation

src/groups/gateway/events.rs

@@ -1,3 +1,5 @@
+//! Event handling for the gateway sub-module.
+
 use std::sync::Arc;
 
 use async_trait::async_trait;
@@ -11,6 +13,7 @@ use crate::{
     state::State,
 };
 
+/// Logs a ready message when the bot is ready.
 #[derive(Debug)]
 pub struct ReadyHandler;
 
@@ -27,6 +30,7 @@ impl OnReadyHandler<State> for ReadyHandler {
     }
 }
 
+/// Logs a reconnection message when the gateway asks for a reconnection.
 #[derive(Debug)]
 pub struct ReconnectHandler;
 

src/groups/gateway/mod.rs

@@ -1 +1,3 @@
+//! Logging gateway events.
+
 pub mod events;