[symfony#2401] Fixing a typo thanks to @michaelperrin and adding a reference link

weaverryan · weaverryan · commit 2634b487cc48 · 2013-03-31T17:22:09.000-05:00
diff --git a/reference/forms/types/options/virtual.rst.inc b/reference/forms/types/options/virtual.rst.inc
@@ -3,5 +3,5 @@ virtual
 
 **type**: ``boolean`` **default**: ``false``
 
-This option determines if the form will be mapped with data. This can be usefull
-if you need a form to structure the view.
+This option determines if the form will be mapped with data. This can be useful
+if you need a form to structure the view. See :doc:`/cookbook/form/use_virtuals_forms`.
