Update chainerx/_docs/device.py
Update chainerx/_docs/device.py

Co-Authored-By: niboshi <6ec538ad88d80aac1780d78552d1be961fd6834b@gmail.com>
niboshi/chainer,chainer/chainer,hvy/chainer,wkentaro/chainer,jnishi/chainer,jnishi/chainer,keisuke-umezawa/chainer,pfnet/chainer,chainer/chainer,wkentaro/chainer,okuta/chainer,keisuke-umezawa/chainer,jnishi/chainer,tkerola/chainer,ktnyt/chainer,hvy/chainer,hvy/chainer,niboshi/chainer,chainer/chainer,okuta/chainer,keisuke-umezawa/chainer,hvy/chainer,niboshi/chainer,ktnyt/chainer,ktnyt/chainer,wkentaro/chainer,keisuke-umezawa/chainer,okuta/chainer,wkentaro/chainer,chainer/chainer,jnishi/chainer,ktnyt/chainer,okuta/chainer,niboshi/chainer