Fix dead link
Fix dead link

pfnet/chainer,chainer/chainer,ktnyt/chainer,keisuke-umezawa/chainer,aonotas/chainer,chainer/chainer,ktnyt/chainer,okuta/chainer,niboshi/chainer,ysekky/chainer,niboshi/chainer,AlpacaDB/chainer,hvy/chainer,kiyukuta/chainer,jnishi/chainer,cupy/cupy,keisuke-umezawa/chainer,niboshi/chainer,hvy/chainer,ktnyt/chainer,anaruse/chainer,niboshi/chainer,keisuke-umezawa/chainer,chainer/chainer,tkerola/chainer,AlpacaDB/chainer,wkentaro/chainer,ronekko/chainer,cupy/cupy,wkentaro/chainer,okuta/chainer,hvy/chainer,kikusu/chainer,wkentaro/chainer,keisuke-umezawa/chainer,kashif/chainer,ktnyt/chainer,delta2323/chainer,jnishi/chainer,cupy/cupy,benob/chainer,benob/chainer,chainer/chainer,okuta/chainer,wkentaro/chainer,cupy/cupy,jnishi/chainer,jnishi/chainer,rezoo/chainer,okuta/chainer,hvy/chainer,kikusu/chainer