Fix sse and ws examples (#429)

* Fix sse example

* Fix websockets example

examples/sse/src/main.rs

@@ -36,7 +36,7 @@ async fn main() {
 
     // build our application with a route
     let app = Router::new()
-        .nest("/", static_files_service)
+        .fallback(static_files_service)
         .route("/sse", get(sse_handler))
         .layer(TraceLayer::new_for_http());
 

examples/websockets/src/main.rs

@@ -33,8 +33,7 @@ async fn main() {
 
     // build our application with some routes
     let app = Router::new()
-        .nest(
-            "/",
+        .fallback(
             service::get(
                 ServeDir::new("examples/websockets/assets").append_index_html_on_directories(true),
             )