changed docs
changed docs

following flake8, and making the notation of shape upper case.
chainer/chainer,niboshi/chainer,hvy/chainer,keisuke-umezawa/chainer,wkentaro/chainer,jnishi/chainer,cupy/cupy,chainer/chainer,okuta/chainer,hvy/chainer,niboshi/chainer,ktnyt/chainer,aonotas/chainer,chainer/chainer,hvy/chainer,cupy/cupy,niboshi/chainer,ronekko/chainer,cupy/cupy,jnishi/chainer,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer,ktnyt/chainer,delta2323/chainer,jnishi/chainer,rezoo/chainer,anaruse/chainer,niboshi/chainer,wkentaro/chainer,keisuke-umezawa/chainer,ktnyt/chainer,wkentaro/chainer,ysekky/chainer,cupy/cupy,wkentaro/chainer,ktnyt/chainer,jnishi/chainer,tkerola/chainer,kiyukuta/chainer,okuta/chainer,kashif/chainer,pfnet/chainer,hvy/chainer,chainer/chainer,keisuke-umezawa/chainer