save.php: PHPDoc header adjusted to describe coming return values.

extension/qfq/api/save.php

@@ -22,8 +22,10 @@ require_once(__DIR__ . '/../qfq/Constants.php');
  * message: <message>
  * redirect: client|url|no
  * redirect-url: <url>
- * field-name:<field name>
+ * field-name: <field name>
  * field-message: <message>
+ * form-data: [ fieldname1 => value1, fieldname2 => value2, ... ]
+ * form-control: [ fieldname1 => status1, fieldname2 => status2, ... ]  status: show|hide, enabled|disabled, readonly|readwrite
  *
  * Description:
  *