Disambiguate expressions in rsx by requiring curlies

packages/router/examples/simple_routes.rs

@@ -103,7 +103,7 @@ fn Route1(cx: Scope, user_id: usize, dynamic: usize, query: String, extra: Strin
 fn Route2(cx: Scope, user_id: usize) -> Element {
     render! {
         pre { "Route2{{\n\tuser_id:{user_id}\n}}" }
-        (0..*user_id).map(|i| rsx!{ p { "{i}" } }),
+        {(0..*user_id).map(|i| rsx!{ p { "{i}" } })},
         p { "Footer" }
         Link {
             to: Route::Route3 {