Add missing ? operator after handle.await

abhijeetbhagat · web-flow · commit 4742f461fe0d · 2020-02-22T15:17:06.000+05:30
According to line#118, there should be a `?` operator after `await`.
diff --git a/docs/src/tutorial/receiving_messages.md b/docs/src/tutorial/receiving_messages.md
@@ -111,7 +111,7 @@ We can "fix" it by waiting for the task to be joined, like this:
 #
 # async move |stream| {
 let handle = task::spawn(connection_loop(stream));
-handle.await
+handle.await?
 # };
 ```
 

Original file line number	Diff line number	Diff line change
`@@ -111,7 +111,7 @@ We can "fix" it by waiting for the task to be joined, like this:`
`111`	`111`	`#`
`112`	`112`	`# async move \|stream\| {`
`113`	`113`	`let handle = task::spawn(connection_loop(stream));`
`114`		`-handle.await`
	`114`	`+handle.await?`
`115`	`115`	`# };`
`116`	`116`	```
`117`	`117`