Support.php: phpdoc

extension/qfq/qfq/helper/Support.php

@@ -520,6 +520,8 @@ class Support {
     }
 
     /**
+     * Concatenate URL and Parameter. Depending of if there is a '?' in URL or not,  append the param with '?' or '&'..
+     *
      * @param string $url
      * @param string $param
      * @return string