fix reborn commit version in doc
fix reborn commit version in doc

we will re-benchmark again later.

reborndb/reborn,fengshao0907/reborn,kangkot/reborn,CrazyJvm/reborn,kangkot/reborn,qiuyesuifeng/reborn,hart/reborn,is00hcw/reborn,qiuyesuifeng/reborn,is00hcw/reborn,CrazyJvm/reborn,ksmaheshkumar/reborn,fengshao0907/reborn,reborndb/reborn,is00hcw/reborn,kangkot/reborn,reborndb/reborn,reborndb/reborn,ksmaheshkumar/reborn,CrazyJvm/reborn,qiuyesuifeng/reborn,hart/reborn,is00hcw/reborn,ksmaheshkumar/reborn,kangkot/reborn,CrazyJvm/reborn,qiuyesuifeng/reborn,ksmaheshkumar/reborn,hart/reborn,fengshao0907/reborn,hart/reborn,fengshao0907/reborn