Fix typos in label_smooth_op
Fix typos in label_smooth_op

baidu/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,putcn/Paddle,lcy-seso/Paddle,lcy-seso/Paddle,chengduoZH/Paddle,tensor-tang/Paddle,Canpio/Paddle,Canpio/Paddle,pkuyym/Paddle,Canpio/Paddle,jacquesqiao/Paddle,jacquesqiao/Paddle,putcn/Paddle,QiJune/Paddle,PaddlePaddle/Paddle,jacquesqiao/Paddle,QiJune/Paddle,Canpio/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,tensor-tang/Paddle,reyoung/Paddle,jacquesqiao/Paddle,lcy-seso/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,lcy-seso/Paddle,baidu/Paddle,chengduoZH/Paddle,lcy-seso/Paddle,lcy-seso/Paddle,QiJune/Paddle,baidu/Paddle,luotao1/Paddle,reyoung/Paddle,tensor-tang/Paddle,QiJune/Paddle,Canpio/Paddle,reyoung/Paddle,pkuyym/Paddle,Canpio/Paddle,putcn/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,chengduoZH/Paddle,QiJune/Paddle,pkuyym/Paddle,luotao1/Paddle,luotao1/Paddle,pkuyym/Paddle,chengduoZH/Paddle,PaddlePaddle/Paddle,luotao1/Paddle,putcn/Paddle,chengduoZH/Paddle,reyoung/Paddle,Canpio/Paddle,tensor-tang/Paddle,tensor-tang/Paddle,jacquesqiao/Paddle,QiJune/Paddle,putcn/Paddle,reyoung/Paddle,baidu/Paddle,putcn/Paddle,baidu/Paddle,luotao1/Paddle