chore(doc): Add a link to the MIO utils module summary

util/src/lib.rs

@@ -22,7 +22,7 @@ pub mod io;
 pub mod length_prefix_encoding;
 /// Memory manipulation and allocation utilities.
 pub mod mem;
-/// MIO integration utilities.
+/// [MIO (Metal I/O)](https://docs.rs/crate/mio/) integration utilities.
 pub mod mio;
 /// Extended Option type functionality.
 pub mod option;

util/src/mio/mio.rs

@@ -6,7 +6,7 @@ use crate::{
     result::OkExt,
 };
 
-/// Module containing I/O interest flags for Unix operations
+/// Module containing I/O interest flags for Unix operations (see also: [mio::Interest])
 pub mod interest {
     use mio::Interest;