update examples

examples/global-404-handler/src/main.rs

@@ -5,7 +5,6 @@
 //! ```
 
 use axum::{
-    handler::Handler,
     http::StatusCode,
     response::{Html, IntoResponse},
     routing::get,
@@ -24,10 +23,10 @@ async fn main() {
         .init();
 
     // build our application with a route
-    let app = Router::new().route("/", get(handler));
+    let app = Router::without_state().route("/", get(handler));
 
     // add a fallback service for handling routes to unknown paths
-    let app = app.fallback(handler_404.into_service());
+    let app = app.fallback(handler_404);
 
     // run it
     let addr = SocketAddr::from(([127, 0, 0, 1], 3000));