bug #5795 Fix typo in UserType class (Dorozhko-Anton)

This PR was submitted for the 2.7 branch but it was merged into the 2.3 branch instead (closes #5795).

Discussion
----------

Fix typo in UserType class

delete extra ';'

Commits
-------

ede42da Fix typo in UserType class

cookbook/doctrine/registration_form.rst

@@ -163,8 +163,8 @@ Next, create the form for the ``User`` entity::
         public function buildForm(FormBuilderInterface $builder, array $options)
         {
             $builder
-                ->add('email', 'email');
-                ->add('username', 'text');
+                ->add('email', 'email')
+                ->add('username', 'text')
                 ->add('plainPassword', 'repeated', array(
                     'type' => 'password',
                     'first_options'  => array('label' => 'Password'),