Update cdn.conf (invaild domain) (#8)

".abc-cdn.net." -> ".abc-cdn.net"

List/domainset/cdn.conf

@@ -1023,7 +1023,7 @@ static.gettyimages.com
 media.gettyimages.com
 # ABC News
 res.abc.net.au
-.abc-cdn.net.
+.abc-cdn.net
 assets-cdn.abcnews.com
 s.abcnews.com
 # Fox News