codeforces - contest info not updated, wrong link

[uppi uppi]

1. As we can see, http://codeforces.com/contests/798 is not #409 anymore, it was renamed to #410 when vk cup round became #409. It's still #409 on clist.by.
2. Contest link for codeforces is http://codeforces.com/contest/798, but it should be http://codeforces.com/contests/798. /contest/ is a direct link, it doesn't work when contest is not started.

[Aleksey Ropan]

1. autofix
2. fixed