fix 404 of "%s/%s.html" in qq.py

Happy new year 抖Mort, long time no PR for the project.

I've tested this fix in

    http://v.qq.com/cover/j/j873qv1h7x54oqb.html?vid=i00139tqu0r&start=155
    http://y.qq.com/y/static/mv/mv_play.html?vid=g0013ztbsf2
    http://static.video.qq.com/TPout.swf?auto=1&vid=q0111msw4jo

It's not quiet easy for me to fix this, I'm very happy when found the video title hidden in http://sns.video.qq.com/tvideo/fcgi-bin/video?vid= in wireshark(seems easier than searching in dev console), so I hope that you could write sth. like your [post before](http://www.soimort.org/posts/149) about grabbing videos , thanks a lot for the project.

I've also removed some spaces, they are not nice in vim with vividchalk color scheme. It would be great if you could remove them through the project.