fix(promise-overview): 細かい言葉の抜けを修正
fix(promise-overview): 細かい言葉の抜けを修正

azu/promises-book,mzbac/promises-book,genie88/promises-book,oToUC/promises-book,purepennons/promises-book,cqricky/promises-book,liyunsheng/promises-book,cqricky/promises-book,liubin/promises-book,wenber/promises-book,lidasong2014/promises-book,tangjinzhou/promises-book,sunfurong/promise,mzbac/promises-book,purepennons/promises-book,azu/promises-book,sunfurong/promise,wangwei1237/promises-book,dieface/promises-book,dieface/promises-book,wenber/promises-book,azu/promises-book,cqricky/promises-book,charlenopires/promises-book,oToUC/promises-book,lidasong2014/promises-book,dieface/promises-book,wangwei1237/promises-book,charlenopires/promises-book,wenber/promises-book,xifeiwu/promises-book,tangjinzhou/promises-book,charlenopires/promises-book,liubin/promises-book,liubin/promises-book,mzbac/promises-book,oToUC/promises-book,tangjinzhou/promises-book,lidasong2014/promises-book,wangwei1237/promises-book,xifeiwu/promises-book,xifeiwu/promises-book,liyunsheng/promises-book,azu/promises-book,genie88/promises-book,purepennons/promises-book,genie88/promises-book,liyunsheng/promises-book,sunfurong/promise