docs(service): service_fn doc test to async/await

weihanglo · seanmonstar · commit 7c2622abefc2 · 2019-07-15T11:21:16.000-07:00
diff --git a/src/service/service.rs b/src/service/service.rs
@@ -43,10 +43,11 @@ pub trait Service {
 /// # Example
 ///
 /// ```rust
+/// # #![feature(async_await)]
 /// use hyper::{Body, Request, Response, Version};
 /// use hyper::service::service_fn;
 ///
-/// let service = service_fn(|req: Request<Body>| {
+/// let service = service_fn(|req: Request<Body>| async move{
 ///     if req.version() == Version::HTTP_11 {
 ///         Ok(Response::new(Body::from("Hello World")))
 ///     } else {
