Minor reword

Author: javiereguiluz

form/direct_submit.rst

@@ -86,11 +86,9 @@ method, pass the submitted data directly to
 .. caution::
 
     When the second parameter ``$clearMissing`` is ``false``, like with the
-    "PATCH" method, the validation extension will only handle the submitted
-    fields. If the underlying data needs to be validated, this should be done
-    manually, i.e. using the validator.
-    
-    When you need validation for some fields you can extend your data array with the required ones so that they will be validated.
-    i.e.::
-    
+    "PATCH" method, the validation will only apply to the submitted fields. If
+    you need to validate all the underlying data, add the required fields
+    manually so that they are validated::
+
+        // 'email' and 'username' are added manually to force their validation
         $form->submit(array_merge(['email' => null, 'username' => null], $request->request->all()), false);