fix wrong link to the README in the help message
fix wrong link to the README in the help message

lepture/pyenv,genome-vendor/pyenv,obimod/pyenv,rowhit/pyenv,hlecuanda/pyenv,kevinburke/pyenv,yeonsh/pyenv,cehoffman/pyenv,UCASREN/pyenv,rowhit/pyenv,takluyver/pyenv,xshwy/pyenv,kevinburke/pyenv,VShangxiao/pyenv,sebhahn/pyenv,zmwangx/pyenv,dnsd/pyenv,yeonsh/pyenv,lozybean/pyenv,recruit-mtl/pyenv,sebhahn/pyenv,dnsd/pyenv,xshwy/pyenv,syndbg/goenv,UCASREN/pyenv,pyenv/pyenv,fly19890211/pyenv,blueyed/pyenv,dongguangming/pyenv,recruit-mtl/pyenv,syndbg/goenv,hlecuanda/pyenv,genome-vendor/pyenv,BanzaiMan/pyenv,takluyver/pyenv,fly19890211/pyenv,syndbg/goenv,chenfengyuan/pyenv,BanzaiMan/pyenv,sebhahn/pyenv,lepture/pyenv,obimod/pyenv,cehoffman/pyenv,VShangxiao/pyenv,habinmusic/pyenv,habinmusic/pyenv,yyuu/pyenv,lozybean/pyenv,pyenv/pyenv,chenfengyuan/pyenv,pyenv/pyenv,yyuu/pyenv,dongguangming/pyenv,syndbg/goenv,zmwangx/pyenv