added the step to include "use Symfony\Bundle\FrameworkBundle\Controller\Controller;"

before Lucky Controller extends the base controller class. This was mentioned in
the code but could easily have been missed as a step. I missed that and didn't
realize it was a new line in the code. I think the necessary Framework bundles should
all have been listed.

Author: tiwiex

page_creation.rst

@@ -94,7 +94,10 @@ If you're returning HTML from your controller, you'll probably want to render
 a template. Fortunately, Symfony comes with `Twig`_: a templating language that's
 easy, powerful and actually quite fun.
 
-First, make sure that ``LuckyController`` extends Symfony's base
+First, include the Symfony controller class as shown in line 5 below then,
+make sure that ``LuckyController`` extends Symfony's base
+:class:`Symfony\\Bundle\\FrameworkBundle\\Controller\\Controller` class::
+
 :class:`Symfony\\Bundle\\FrameworkBundle\\Controller\\Controller` class::
 
     // src/AppBundle/Controller/LuckyController.php