Update ExampleRedditAPI.md

Author: gaearon

docs/advanced/ExampleRedditAPI.md

@@ -54,7 +54,7 @@ function requestPosts(reddit) {
 function receivePosts(reddit, json) {
   return {
     type: RECEIVE_POSTS,
-    reddit: reddit,
+    reddit,
     posts: json.data.children.map(child => child.data),
     receivedAt: Date.now()
   };
@@ -363,4 +363,4 @@ export default class Posts extends Component {
 Posts.propTypes = {
   posts: PropTypes.array.isRequired
 };
-```
+```