Update announcements.json

announcements.json

 [
-	{"id":11,"title":"已更新805新卡 <-戳我了解详情","url":"https://goo.gl/1KTFn", "created_at":"2013-04-27T18:12:07+08:00","updated_at":"2013-04-27T07:12:08+08:00"},
+	{"id":11,"title":"房间列表白屏或房间密码错误的去玩自动匹配，人太多服务器爆了..", "created_at":"2013-04-27T18:12:07+08:00","updated_at":"2013-04-27T07:12:08+08:00"},
 	{"id":10,"title":"和我签下契约，成为魔法少女吧 (招募开发者/管理员) <-戳我","url":"https://my-card.in/humans", "created_at":"2013-04-13T18:12:07+08:00","updated_at":"2013-04-13T07:12:08+08:00"},
 	{"id":9,"title":"卡组分享系统测试中，有问题或建议请到G+ mycard社群吐槽","url":"https://plus.google.com/communities/112748610591305626436", "created_at":"2013-04-02T18:12:07+08:00","updated_at":"2013-04-02T07:12:08+08:00"},
 	{"id":8,"title":"mycard可以使用Google账号登录了<-戳我查看详情","url":"https://github.com/mycard/mycard/wiki/%E7%94%A8%E6%88%B7", "created_at":"2013-03-25T18:12:07+08:00","updated_at":"2013-03-25T07:12:08+08:00"},