fix typo in rbenv help
fix typo in rbenv help

viclim/rbenv,cdlm/rbenv,rinrinne/ndkenv,yeonsh/pyenv,habinmusic/pyenv,sj26/rbenv,jeongdeoksu/rbenv,ox/rbenv,griff/rbenv,SamuraiT/rbenv,syndbg/goenv,RinSer/rbenv,ucberkeley/rbenv,sgerrand/rbenv,dark5un/nodenv,pyenv/pyenv,doitian/rbenv,jasonkarns/rbenv,janusnic/rbenv,benizi/rbenv,javierjulio/rbenv,sj26/rbenv,zmwangx/pyenv,docwhat/rbenv,codesdk/rbenv,xshwy/pyenv,gma/rbenv,rowhit/pyenv,cs278/phpenv,cehoffman/rbenv,YanhaoYang/rbenv,ryanfb/rbenv,josegonzalez/rbenv,rbenv/rbenv,syndbg/goenv,viclim/rbenv,zmwangx/pyenv,bronson/rbenv,jrolfs/nodenv,viking/Renv,VShangxiao/pyenv,ngyuki/phpenv,ffdc-scm/rbenv-x86_64-linux,peterpih/rbenv,mgrubb/rbenv,yogeshkakde/rbenv,pulseenergy/rbenv,obimod/pyenv,raa0121/vimenv,riywo/plenv-old,andrew-christianson/rbenv,rridhan/rbenv,beck/rbenv,mediadoneright/rbenv,dentarg/rbenv,andrew-christianson/rbenv,sometimesfood/rbenv,kynan/rbenv,michael-gabenna/rbenv,yyyc514/rbenv,docwhat/rbenv,terceiro/rbenv,Plaristote/rbenv,bradynpoulsen/rbenv,amarshall/rbenv,asaaki/rsenv,dongguangming/pyenv,jeremy/rbenv,intfrr/rbenv,pyenv/pyenv,bradynpoulsen/rbenv,gutenye/rbenv,takluyver/pyenv,dark5un/nodenv,jeongdeoksu/rbenv,josegonzalez/rbenv,habinmusic/pyenv,brandt/rbenv,cyril/rbenv,adarshmuthappa/nodenv,RinSer/rbenv,richo/rbenv,gma/rbenv,ewollesen/rbenv,xshwy/pyenv,janusnic/rbenv,howtolearntocode/rbenv,beck/rbenv,nobyuki/rbenv,royratcliffe/rbenv,ffdc-scm/rbenv-x86_64-linux,yeonsh/pyenv,lozybean/rbenv,howtolearntocode/rbenv,chenfengyuan/pyenv,peterpih/rbenv,johnwilliams/rbenv,jmatbastos/rbenv,intfrr/rbenv,jmatbastos/rbenv,princeofdarkness76/rbenv,michael-gabenna/rbenv,shoyan/rbenv,stivenrgalvis/rbenv,josegonzalez/rbenv,SamuraiT/rbenv,genome-vendor/pyenv,brandt/rbenv,janusnic/rbenv,pyenv/pyenv,yyuu/rbenv,pumpkineater/rbenv,cehoffman/rbenv,princeofdarkness76/rbenv,hauleth/rbenv,princeofdarkness76/rbenv,hlecuanda/pyenv,jmatbastos/rbenv,OiNutter/nodenv,cyril/rbenv,terceiro/rbenv,jeffmccune/rbenv,jpfuentes2/st2,takluyver/pyenv,Angeldude/rbenv,javierjulio/rbenv,avdhoweb/rbenv,griff/rbenv,adarshmuthappa/nodenv,jmatbastos/rbenv,candeira/rbenv,syndbg/goenv,jeongdeoksu/rbenv,pumpkineater/rbenv,jmatbastos/rbenv,pumpkineater/rbenv,ffdc-scm/rbenv-x86_64-linux,atz/rbenv,jrolfs/nodenv,BanzaiMan/pyenv,johnwilliams/rbenv,RubenVerborgh/rbenv,rridhan/rbenv,sstephenson/rbenv,VShangxiao/pyenv,CHH/rbenv,edubkendo/rbenv,benizi/rbenv,beck/rbenv,Angeldude/rbenv,chenfengyuan/pyenv,cldwalker/rbenv,Ferocia/rbenv,yogeshkakde/rbenv,yyuu/pyenv,sheerun/rbenv,cehoffman/nodenv,lozybean/rbenv,jmatbastos/rbenv,sanemat/rbenv,audionerd/rbenv,recruit-mtl/pyenv,stivenrgalvis/rbenv,mediadoneright/rbenv,jpfuentes2/st2,michael-gabenna/rbenv,drakmail/rbenv,lozybean/pyenv,lozybean/pyenv,rowhit/pyenv,atz/rbenv,golib/goenv,kynan/rbenv,evertrue/rbenv,dongguangming/pyenv,ddollar/rbenv,BanzaiMan/pyenv,jeremy/rbenv,hlecuanda/pyenv,avdhoweb/rbenv,jmatbastos/rbenv,yyyc514/rbenv,ryanfb/rbenv,peterhoeg/rbenv,sstephenson/rbenv,dnsd/pyenv,howtolearntocode/rbenv,nebhale/cfenv,pulseenergy/rbenv,rfnash/rbenv,yogeshkakde/rbenv,docwhat/rbenv,codesdk/rbenv,gutenye/rbenv,candeira/rbenv,Angeldude/rbenv,ascarter/rbenv,andrew-christianson/rbenv,phusion/rbenv,almog/rbenv,Ferocia/rbenv,rridhan/rbenv,ascarter/rbenv,mediadoneright/rbenv,lann/rbenv,ffdc-scm/rbenv-x86_64-linux,stivenrgalvis/rbenv,amarshall/rbenv,silasb/rbenv,riywo/plenv-old,LawnGnome/rbenv,phusion/rbenv,yyuu/pyenv,viking/Renv,reyesyang/rbenv,intfrr/rbenv,lann/rbenv,sgerrand/rbenv,RubenVerborgh/rbenv,fly19890211/pyenv,genome-vendor/pyenv,cehoffman/pyenv,fly19890211/pyenv,cs278/phpenv,cehoffman/pyenv,cehoffman/luaenv,sebhahn/pyenv,jasonkarns/rbenv,talentdeficit/erlenv,reyesyang/rbenv,yyyc514/rbenv,OiNutter/nodenv,CHH/rbenv,syndbg/goenv,skalee/rbenv,ucberkeley/rbenv,RinSer/rbenv,obimod/pyenv,sebhahn/pyenv,dnsd/pyenv,rbenv/rbenv,sstephenson/rbenv,royratcliffe/rbenv,jasonkarns/rbenv,sodabrew/rbenv,avdhoweb/rbenv,viclim/rbenv,cyril/rbenv,reyesyang/rbenv,nodenv/nodenv,jeffmccune/rbenv,leocassarani/rbenv,bronson/rbenv,ewollesen/rbenv,bradynpoulsen/rbenv,cldwalker/rbenv,UCASREN/pyenv,cehoffman/nodenv,dentarg/rbenv,jf/rbenv,codesdk/rbenv,sometimesfood/rbenv,UCASREN/pyenv,lozybean/rbenv,sebhahn/pyenv,recruit-mtl/pyenv,cehoffman/rbenv,mgrubb/rbenv,blueyed/rbenv,jeremy/rbenv,SamuraiT/rbenv,cehoffman/luaenv,ddollar/rbenv,peterpih/rbenv,ffdc-scm/rbenv-x86_64-linux,audionerd/rbenv,brntbeer/rbenv,nodenv/nodenv,Ferocia/rbenv