[book] [http_cache] fixed wrong usage of ->renderView() method in a Controller. Changed to ->render() call.

Author: Hugo Hamon

book/http_cache.rst

@@ -545,7 +545,7 @@ md5 of the content::
 
  public function indexAction()
  {
- $response = $this->renderView('MyBundle:Main:index.html.twig');
+ $response = $this->render('MyBundle:Main:index.html.twig');
  $response->setETag(md5($response->getContent()));
  $response->isNotModified($this->getRequest());
 
@@ -835,7 +835,7 @@ independent of the rest of the page.
 
  public function indexAction()
  {
- $response = $this->renderView('MyBundle:MyController:index.html.twig');
+ $response = $this->render('MyBundle:MyController:index.html.twig');
  $response->setSharedMaxAge(600);
 
  return $response;