parser: Document PPFrame_DOM::expand() as taking DOMNodeList

Caught by PhanTypeMismatchArgument, to be enabled with I34d65fe3ff191.

Change-Id: Ifa41f1c8a099a8d6c4e37052c8d93dc8473ec4f0

diff --git a/includes/parser/PPFrame_DOM.php b/includes/parser/PPFrame_DOM.php
index ac3a266..bb310f2 100644 (file)
--- a/includes/parser/PPFrame_DOM.php
+++ b/includes/parser/PPFrame_DOM.php
@@ -153,7 +153,7 @@ class PPFrame_DOM implements PPFrame {
 
        /**
         * @throws MWException
-        * @param string|PPNode_DOM|DOMNode $root
+        * @param string|PPNode_DOM|DOMNode|DOMNodeList $root
         * @param int $flags
         * @return string
         */