Update API.md
Update API.md

markdown grammar mistake(missing `) makes the wrong layout of the api
jonsterling/gulp,mariuszskon/gulp,es128/gulp,ancchaimongkon/gulp,youprofit/gulp,SimenB/gulp,rlugojr/gulp,duanying0818/gulp,tuzilingdang/gulp,Teino1978-Corp/Teino1978-Corp-gulp,silverbux/gulp,tuzilingdang/gulp,JimiHFord/gulp,ged/gulp,benweet/gulp,tksander/gulp,ged/gulp,wjb12/gulp,yugle7/gulp,r14r/fork_javascript_gulp,wbinnssmith/gulp,pppp22591558/gulp,KillerDesigner/gulp,mariuszskon/gulp,IrvBriscoe/gulp,cgvarela/slush,minodisk/gulp,xuxinpie/gulp,ybg555/gulp,stoeffel/gulp,duanying0818/gulp,stevemao/gulp,michaelgena/gulp,ruspython/gulp,bmds/gulp,ankita-kumari/gulp,ruspython/gulp,jmm/gulp,eaglesjava/gulp,prashant-andani/gulp,thejameskyle/gulp,foresthz/gulp,Tiger66639/gulp,Teino1978-Corp/Teino1978-Corp-gulp,breyed/gulp,jaeh/gulp,xuxinpie/gulp,flackend/gulp,preco21/gulp,AtChina/gulp,geltoncruz/gulp,bORm/gulp,jmm/gulp,liangzhien/gulp,iSC-Labs/gulp,borellaster/gulp,bobintornado/gulp,michaelgena/gulp,es128/gulp,yochannah/gulp,mohislm/gulp,snidima/gulp,AleksueiR/gulp,zongkelong/gulp,JimiHFord/gulp,geltoncruz/gulp,foresthz/gulp,MarcBT/gulp,Coaxial/gulp,yonglehou/gulp,VANITAX/gulp,VANITAX/gulp,callumacrae/gulp,aaron-goshine/gulp,pdg6805/gulp,AlexKomrakov/gulp,flackend/gulp,prashant-andani/gulp,zpao/gulp,preco21/gulp,bobintornado/gulp,brilliun/gulp,silverbux/gulp,gavioto/gulp,mad-aran/gulp,doginthehat/gulp,vineethawal/gulp,tfennelly/gulp,pH200/jsrun,tkvern/gulp,pppp22591558/gulp,gavioto/gulp,JsAaron/gulp,kt3k/gulp,sonjudan/gulp,cgourlay/gulp,Tiger66639/gulp,liangzhien/gulp,frankwallis/gulp,imjerrybao/gulp,edisplay/gulp,Coaxial/gulp,BogusCurry/gulp,midgethoen/gulp,IrvBriscoe/gulp,cgvarela/slush,midgethoen/gulp,cgvarela/gulp,nmccready/gulp,GoodBoyDigital/gulp,seedtigo/gulp,klausbayrhammer/gulp,anorthwolf/gulp,chrismoulton/gulp,tfennelly/gulp,codeclimate-demo/gulp,zensh/gulp,irenekay/Gulpjs-Webtest,youprofit/gulp,soliury/gulp,chrismoulton/gulp,wbinnssmith/gulp,fengjianjunstudy/gulp,AleksueiR/gulp,huzion/gulp,BogusCurry/gulp,appleboy/gulp,MichaelFBA/gulp,minodisk/gulp,MichaelFBA/gulp,lcoder/gulp,edisplay/gulp,lcoder/gulp,demohi/gulp,seedtigo/gulp,r14r/fork_javascript_gulp,tksander/gulp,XiaoLongW/gulp,benweet/gulp,gdi2290/gulp,Rorchach/gulp,codeclimate-demo/gulp,KillerDesigner/gulp,brilliun/gulp,GoodBoyDigital/gulp,doginthehat/gulp,sttk/gulp,AlexKomrakov/gulp,donglegend/gulp,callumacrae/gulp,hckhanh/gulp,jhsu/gulp,breyed/gulp,lanbin/gulp,ybg555/gulp,pdg6805/gulp,pH200/jsrun,pdehaan/gulp,hckhanh/gulp,crspiccin/gulp,romario333/gulp,borellaster/gulp,crspiccin/gulp,XiaoLongW/gulp,yochannah/gulp,rlugojr/gulp,slushjs/slush,JsAaron/gulp,snidima/gulp,zpao/gulp,Rorchach/gulp,romario333/gulp,songshuang00/gulp,Zagorakiss/gulp,mikehaas763/gulp,sonjudan/gulp,jonsterling/gulp,nmccready/gulp,donglegend/gulp,jaeh/gulp,iSC-Labs/gulp,soliury/gulp,wjb12/gulp,AtChina/gulp,imjerrybao/gulp,aaron-goshine/gulp,eaglesjava/gulp,tkvern/gulp,ajwebb/gulp,jhsu/gulp,frankwallis/gulp,huzion/gulp,caseytrombley/gulp,stevemao/gulp,zongkelong/gulp,songshuang00/gulp,Zagorakiss/gulp,PNW3DEV/gulp,ankita-kumari/gulp,gulpjs/gulp,cgourlay/gulp,SimenB/gulp,bORm/gulp,yugle7/gulp,thejameskyle/gulp,fengjianjunstudy/gulp,cgvarela/gulp,moander/gulp,zensh/gulp,slushjs/slush,MarcBT/gulp,mad-aran/gulp,ancchaimongkon/gulp,vineethawal/gulp,maxhollmann/gulp,anorthwolf/gulp,caseytrombley/gulp,maxhollmann/gulp,ajwebb/gulp,mikehaas763/gulp,moander/gulp,lanbin/gulp,klausbayrhammer/gulp,pdehaan/gulp,mohislm/gulp,yonglehou/gulp,PNW3DEV/gulp,bmds/gulp