minor #7114 Minor text fix - wrong submit button label (Forms) (muffe)

This PR was submitted for the 3.1 branch but it was merged into the 2.7 branch instead (closes #7114).

Discussion
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Minor text fix - wrong submit button label (Forms)

The screenshot of the rendered view below [(Form)](http://symfony.com/doc/current/_images/simple-form.png) shows the submit button with "Create Post".

Commits
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274dbe3 Minor text fix - wrong submit button label (Forms)

Author: xabbuh

forms.rst

@@ -93,7 +93,7 @@ from inside a controller::
             $form = $this->createFormBuilder($task)
                 ->add('task', 'text')
                 ->add('dueDate', 'date')
-                ->add('save', 'submit', array('label' => 'Create Task'))
+                ->add('save', 'submit', array('label' => 'Create Post'))
                 ->getForm();
 
             return $this->render('default/new.html.twig', array(