Small documentation update
Small documentation update

ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,ganeti-github-testing/ganeti-test-1,dimara/ganeti,apyrgio/ganeti,yiannist/ganeti,grnet/snf-ganeti,mbakke/ganeti,yiannist/ganeti,dimara/ganeti,leshchevds/ganeti,ganeti/ganeti,ganeti/ganeti,bitemyapp/ganeti,yiannist/ganeti,andir/ganeti,grnet/snf-ganeti,apyrgio/snf-ganeti,mbakke/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,bitemyapp/ganeti,onponomarev/ganeti,andir/ganeti,andir/ganeti,leshchevds/ganeti,apyrgio/ganeti,ganeti/ganeti,mbakke/ganeti