bug #6315 Remove third parameter from createFormBuilder call (Hocdoc)

This PR was submitted for the 2.7 branch but it was merged into the 2.3 branch instead (closes #6315).

Discussion
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Remove third parameter from createFormBuilder call

Commits
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162895b Remove third parameter from createFormBuilder call

Author: wouterj

components/form/introduction.rst

@@ -526,7 +526,7 @@ by ``handleRequest()`` to determine whether a form has been submitted):
 
         public function searchAction()
         {
-            $formBuilder = $this->createFormBuilder('form', null, array(
+            $formBuilder = $this->createFormBuilder(null, array(
                 'action' => '/search',
                 'method' => 'GET',
             ));