Fix document
Fix document

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