change zope.org -> zope.com in license

LICENSE.txt

@@ -24,7 +24,7 @@ met:
 
      "This product includes software developed by Zope Corporation 
      for use in the Z Object Publishing Environment
-     (http://www.zope.org/)."
+     (http://www.zope.com/)."
 
    In the event that the product being advertised includes an
    intact Zope distribution (with copyright and license included)
@@ -39,7 +39,7 @@ met:
 
      "This product includes software developed by Zope Corporation
      for use in the Z Object Publishing Environment
-     (http://www.zope.org/)."
+     (http://www.zope.com/)."
 
    Intact (re-)distributions of any official Zope release do not
    require an external acknowledgement.