Format fix

Author: Lucas Paixão

src/net/unix/listener.rs

@@ -13,7 +13,7 @@ use std::{io, path::Path};
 /// use std::env;
 /// use tokio_uring::net::UnixListener;
 /// use tokio_uring::net::UnixStream;
-/// 
+///
 /// if env::var("is_github").is_ok() { return; }
 ///
 /// let sock_file = "/tmp/tokio-uring-unix-test.sock";