Bug 132209 Many XUL documents are invalid XML (<!DOCTYPE window ...>)

patch by riceman+bmo@mail.rit.edu r=timeless rs=jag

extensions/content-packs/resources/content/pref-contentpacks.xul

@@ -17,7 +17,7 @@
 <?xml-stylesheet href="chrome://communicator/skin/" type="text/css"?>
 <?xul-overlay href="chrome://communicator/content/utilityOverlay.xul"?>
  
-<!DOCTYPE window [
+<!DOCTYPE page [
 <!ENTITY % brandDTD SYSTEM "chrome://global/locale/brand.dtd" >
 %brandDTD;
 <!ENTITY % regionDTD SYSTEM "chrome://global-region/locale/region.dtd" >

extensions/content-packs/resources/content/prefOverlay.xul

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 
-<!DOCTYPE window SYSTEM "chrome://content-packs/locale/prefOverlay.dtd">
+<!DOCTYPE overlay SYSTEM "chrome://content-packs/locale/prefOverlay.dtd">
 
 <overlay id="contentPackPrefOverlay"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">