Typo fix on contribution guidelines
Typo fix on contribution guidelines

shupan123/vue-fixed-type,seedalpha/vue,squallyan/vue,karevn/vue,cheapsteak/vue,galenyuan/vue,loki315zx/vue,bsn069/vue,prosenjit-itobuz/vue,elvinzhu/vue,VictorChaun/vue,Alen-gao/vue,yuche/vue,Zeratul5/vue,noyobo/vue,rohmad-st/vue,shupan123/vue-fixed-type,karevn/vue,lovewitty/vue,th0r/vue,kazupon/vue,diermengdierme/vue,lepture/vue,fergaldoyle/vue,jhaesus/vue,shupan123/vue-fixed-type,VimVincent/vue,beni55/vue,KuroGuo/vue,cnbin/vue,echoZQ/vue,Endika/vue,yuByte/vue,haner199401/vue,rohmad-st/vue,endaaman/vue,likaiwalkman/vue,longjl/vue,meiwenhui/vue,lepture/vue,Iamlars/vue,diermengdierme/vue,yuByte/vue,lepture/vue,yuche/vue,coopsource/vue,JsAaron/vue,macroxing/vue,zsh2938/vue,zsh2938/vue,endaaman/vue,kazupon/vue,echoZQ/vue,JsAaron/vue,JosephSilber/vue,Suixinlei/vue,galenyuan/vue,wangjun/vue,cuhuak/vue,Endika/vue,karevn/vue,jwdeitch/vue,gxr1020/vue,elvinzhu/vue,Endika/vue,loki315zx/vue,gold3bear/vue,gold3bear/vue,wangjun/vue,gxr1020/vue,VimVincent/vue,Jonavin/vue,haner199401/vue,ke-pan/vue,th0r/vue,seedalpha/vue,diermengdierme/vue,cheapsteak/vue,meleslilijing/vue,fergaldoyle/vue,AtChina/vue,Erane/vue,KuroGuo/vue,PUSEN/vue,meleslilijing/vue,macroxing/vue,galenyuan/vue,ke-pan/vue,PUSEN/vue,cgvarela/vue,r14r/fork_javascript_vue,prosenjit-itobuz/vue,seedalpha/vue,WQuanfeng/vue,r14r/fork_javascript_vue,GloriaCHL/vue,Erane/vue,jRoadie/vue,beni55/vue,zOxta/vue,JosephSilber/vue,longjl/vue,Alen-gao/vue,VictorChaun/vue,jhaesus/vue,lishengzxc/vue,15521316173/vue,WQuanfeng/vue,15521316173/vue,cnbin/vue,lazarofl/vue,cgvarela/vue,jwdeitch/vue,Zeratul5/vue,likaiwalkman/vue,GloriaCHL/vue,coopsource/vue,th0r/vue,AtChina/vue,zOxta/vue,lishengzxc/vue,squallyan/vue,lazarofl/vue,Iamlars/vue,cuhuak/vue,noyobo/vue,bsn069/vue,fergaldoyle/vue,Suixinlei/vue,Jonavin/vue,meiwenhui/vue,jRoadie/vue,lovewitty/vue