bug #12191 Fixed namespace in example (raitocz)

This PR was merged into the 4.3 branch.

Discussion
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Fixed namespace in example

PSR-4 I guess... it is also later referenced in next example

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Commits
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15fdde4 Fixed namespace in example

Author: wouterj

forms.rst

@@ -168,7 +168,7 @@ extend from :class:`Symfony\\Component\\Form\\AbstractType`, which already
 implements the interface and provides some utilities::
 
     // src/Form/Type/TaskType.php
-    namespace App\Form;
+    namespace App\Form\Type;
 
     use Symfony\Component\Form\AbstractType;
     use Symfony\Component\Form\Extension\Core\Type\DateType;