hmm, now there are two items in the feed: one is download link, other is release notes. I suppose they should be one.
(1) If feed is supposed to be «release-download feed», download link should be item link, as in item with title "Download version 6.6.4", still release notes should be in description, with link to the site.
otherwise,
(2) if feed is «release-notes feed», item link should open site, as in item with title "Modifications in version 6.6.4", but download link may (must?) be somewhere in description.
For me, option 1 is preferred, but others' opinion may not match. Either way, there will be one click less to download wsusoffline