Fix a typo in the recurrent network tutorial
Fix a typo in the recurrent network tutorial

kiyukuta/chainer,kikusu/chainer,AlpacaDB/chainer,t-abe/chainer,chainer/chainer,yanweifu/chainer,benob/chainer,bayerj/chainer,tkerola/chainer,okuta/chainer,keisuke-umezawa/chainer,ikasumi/chainer,ytoyama/yans_chainer_hackathon,niboshi/chainer,okuta/chainer,jfsantos/chainer,ronekko/chainer,chainer/chainer,AlpacaDB/chainer,ktnyt/chainer,hvy/chainer,ktnyt/chainer,wkentaro/chainer,Kaisuke5/chainer,anaruse/chainer,ysekky/chainer,t-abe/chainer,okuta/chainer,elviswf/chainer,delta2323/chainer,ktnyt/chainer,hvy/chainer,rezoo/chainer,kuwa32/chainer,umitanuki/chainer,masia02/chainer,pfnet/chainer,cupy/cupy,keisuke-umezawa/chainer,chainer/chainer,sinhrks/chainer,sinhrks/chainer,wkentaro/chainer,hvy/chainer,keisuke-umezawa/chainer,cemoody/chainer,wkentaro/chainer,truongdq/chainer,aonotas/chainer,1986ks/chainer,ktnyt/chainer,chainer/chainer,cupy/cupy,kashif/chainer,tigerneil/chainer,cupy/cupy,niboshi/chainer,woodshop/complex-chainer,kikusu/chainer,tscohen/chainer,niboshi/chainer,wkentaro/chainer,wavelets/chainer,tereka114/chainer,jnishi/chainer,hvy/chainer,woodshop/chainer,truongdq/chainer,keisuke-umezawa/chainer,jnishi/chainer,laysakura/chainer,muupan/chainer,cupy/cupy,hidenori-t/chainer,minhpqn/chainer,benob/chainer,okuta/chainer,jnishi/chainer,jnishi/chainer,muupan/chainer,niboshi/chainer,sou81821/chainer