Fix document
Fix document

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