correct wrong serialization in context

modules/fontane/index-viewer.xqm

@@ -121,6 +121,8 @@ declare function f-indexviewer:main($model as map()*, $node as node(), $index as
 if ($f-indexproc:notebookParam)
 then
     f-indexproc:register($index)[./@id = $index]
+    (: xhtml prefixes w/o xmlns attr in the output. work around with: :)
+    => serialize() => parse-xml()
 else
     let $doc := doc( local:cache() )
     return