docs: update some UDP server comments

src/servers/udp/server/mod.rs

@@ -1,22 +1,4 @@
 //! Module to handle the UDP server instances.
-//!
-//! There are two main types in this module:
-//!
-//! - [`UdpServer`]: a controller to start and stop the server.
-//! - [`Udp`]: the server launcher.
-//!
-//! The `UdpServer` is an state machine for a given configuration. This struct
-//! represents concrete configuration and state. It allows to start and
-//! stop the server but always keeping the same configuration.
-//!
-//! The `Udp` is the server launcher. It's responsible for launching the UDP
-//! but without keeping any state.
-//!
-//! For the time being, the `UdpServer` is only used for testing purposes,
-//! because we want to be able to start and stop the server multiple times, and
-//! we want to know the bound address and the current state of the server.
-//! In production, the `Udp` launcher is used directly.
-
 use std::fmt::Debug;
 
 use super::RawRequest;

src/servers/udp/server/spawner.rs

@@ -1,3 +1,4 @@
+//! A thin wrapper for tokio spawn to launch the UDP server launcher as a new task.
 use std::net::SocketAddr;
 use std::sync::Arc;