Update controller.rst

change the variable name to make it consistent with the example

Author: zairigimad

controller.rst

@@ -182,7 +182,7 @@ method renders a template **and** puts that content into a ``Response``
 object for you::
 
     // renders templates/lucky/number.html.twig
-    return $this->render('lucky/number.html.twig', array('name' => $name));
+    return $this->render('lucky/number.html.twig', array('max' => $max));
 
 Templating and Twig are explained more in the
 :doc:`Creating and Using Templates article </templating>`.