Remove extra brace (#9910)

docs/higher-order-components.md

@@ -119,7 +119,7 @@ const CommentListWithSubscription = withSubscription(
 const BlogPostWithSubscription = withSubscription(
   BlogPost,
   (DataSource, props) => DataSource.getBlogPost(props.id)
-});
+);
 ```
 
 The first parameter is the wrapped component. The second parameter retrieves the data we're interested in, given a `DataSource` and the current props.