chore(vultr): clean up vultr doc
chore(vultr): clean up vultr doc

mischief/coreos-docs,ksmaheshkumar/docs-2,ionave/docs,mjg59/docs,coreos/docs,michelleN/docs,iankronquist/docs,skynet/docs,jonboulle/docs,endocode/coreos-docs,jdloft/docs,marineam/coreos-docs,hkjn/docs-1,atxwebs/docs,joshix/docs,bq-xiao/docs,robszumski/docs,wli6/docs