Update revoke-prefix path in doc
Update revoke-prefix path in doc

Minor update to make doc up to date with v0.6
chrishoffman/vault,deverton/hashicorp-vault,jmhardison/vault,LolalyLuo/vault,hartsock/vault,joelthompson/vault,Banno/vault,michaelansel/vault,joelthompson/vault,danielsomerfield/vault,quixoten/vault,hashicorp/vault,Aloomaio/vault,tallpauley/vault,jmhardison/vault,martin-ducar-gd/vault,naunga/vault,quixoten/vault,jam-pot/vault,ryon/vault,doodles526/vault,Banno/vault,kingland/vault,mhurne/vault,wjam/vault,mgk/vault,danielsomerfield/vault,rnaveiras/vault,ryon/vault,joelthompson/vault,peteryhwong/vault,rnaveiras/vault,peteryhwong/vault,kingland/vault,martin-ducar-gd/vault,skippy/vault,LolalyLuo/vault,hashicorp/vault,joelthompson/vault,jam-pot/vault,quixoten/vault,Aloomaio/vault,chrishoffman/vault,hashicorp/vault,hartsock/vault,mhurne/vault,Aloomaio/vault,hartsock/vault,jmhardison/vault,hashicorp/vault,kingland/vault,rnaveiras/vault,hartsock/vault,lirao/vault,doodles526/vault,mgk/vault,rnaveiras/vault,jgcallero/vault,kingland/vault,tallpauley/vault,quixoten/vault,wjam/vault,michaelansel/vault,Caiyeon/vault,skippy/vault,hashicorp/vault,mymercurialsky/vault,naunga/vault,lirao/vault,cimarron-pistoncloud/vault,cimarron-pistoncloud/vault,mgk/vault,Aloomaio/vault,jmhardison/vault,memory/vault,MonsantoCo/vault,lemondrank/vault,kingland/vault,lemondrank/vault,Caiyeon/vault,rnaveiras/vault,jgcallero/vault,mymercurialsky/vault,jmhardison/vault,MonsantoCo/vault,mgk/vault,hashicorp/vault,deverton/hashicorp-vault,hartsock/vault,memory/vault