rename file name

Author: Pana

crates/util/io/src/mio_util/mod.rs

@@ -1,8 +1,8 @@
 #![allow(unused)]
 mod event_loop;
 mod handler;
-mod notify;
+mod notify_error;
 
 pub use event_loop::{EventLoop, EventLoopBuilder, Sender};
 pub use handler::Handler;
-pub use notify::NotifyError;
+pub use notify_error::NotifyError;