Revert "Issue #2850189 by vmachado, cilefen: Typo in FormBuilder documentation code example"

This reverts commit e72c97b9.

core/lib/Drupal/Core/Form/FormSubmitterInterface.php

@@ -62,7 +62,7 @@ public function executeSubmitHandlers(&$form, FormStateInterface &$form_state);
    *     ),
    *     'fragment' => 'baz',
    *   ),
-   * );
+   * ));
    * @endcode
    *
    * @param \Drupal\Core\Form\FormStateInterface $form_state