Fixed markup

Author: wouterj

components/options_resolver.rst

@@ -361,10 +361,9 @@ In sub-classes, you can use :method:`Symfony\\Component\\OptionsResolver\\Option
 to add additional allowed types without erasing the ones already set.
 
 .. versionadded:: 2.6
-    Before Symfony 2.6, `setAllowedTypes()` and `addAllowedTypes()` expected
-    the values to be given as an array mapping option names to allowed types::
-
-        $resolver->setAllowedTypes(array('port' => array('null', 'int')));
+    Before Symfony 2.6, ``setAllowedTypes()`` and ``addAllowedTypes()`` expected
+    the values to be given as an array mapping option names to allowed types:
+    ``$resolver->setAllowedTypes(array('port' => array('null', 'int')));``
 
 Value Validation
 ~~~~~~~~~~~~~~~~