Fixed the ESI render example code to work with symfony 2.1

Mike Bissett · Mike Bissett · commit c524fdf96011 · 2013-03-14T09:34:37.000+11:00
diff --git a/book/http_cache.rst b/book/http_cache.rst
@@ -885,7 +885,7 @@ matter), Symfony2 uses the standard ``render`` helper to configure ESI tags:
 
     .. code-block:: jinja
 
-        {% render url('latest_news', { 'max': 5 }), {'standalone': true} %}
+        {% render url('latest_news', { 'max': 5 }) with {}, {'standalone': true} %}
 
     .. code-block:: php
 
