Update command format documentation to reflect optional checksum
Update command format documentation to reflect optional checksum

waynr/puppetdb,ajroetker/puppetdb,haus/puppetdb,senior/puppetdb,johnduarte/puppetdb,wkalt/puppetdb,rbrw/puppetdb,ajroetker/puppetdb,highb/puppetdb,wkalt/puppetdb,stahnma/puppetdb,highb/puppetdb,senior/puppetdb,shrug/puppetdb,kbarber/puppetdb,haus/puppetdb,kbrezina/puppetdb,cprice404/puppetdb,grimradical/puppetdb,cprice404/puppetdb,stahnma/puppetdb,mullr/puppetdb,johnduarte/puppetdb,wkalt/puppetdb,haus/puppetdb,kbarber/puppetdb,rbrw/puppetdb,senior/puppetdb,melissa/puppetdb,puppetlabs/puppetdb,jantman/puppetdb,rbrw/puppetdb,cprice404/puppetdb,kbarber/puppetdb,puppetlabs/puppetdb,melissa/puppetdb,stahnma/puppetdb,grimradical/puppetdb,nfagerlund/puppetdb,shrug/puppetdb,jantman/puppetdb,rbrw/puppetdb,grimradical/puppetdb,github/puppetlabs-puppetdb,mullr/puppetdb,grimradical/puppetdb,melissa/puppetdb,waynr/puppetdb,wkalt/puppetdb,waynr/puppetdb,waynr/puppetdb,kbrezina/puppetdb,kbarber/puppetdb,highb/puppetdb,mullr/puppetdb,rbrw/puppetdb,shrug/puppetdb,puppetlabs/puppetdb,senior/puppetdb,github/puppetlabs-puppetdb,nfagerlund/puppetdb,shrug/puppetdb,kbrezina/puppetdb,highb/puppetdb,kbrezina/puppetdb,mullr/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,johnduarte/puppetdb,nfagerlund/puppetdb,ajroetker/puppetdb,jantman/puppetdb,github/puppetlabs-puppetdb,johnduarte/puppetdb,ajroetker/puppetdb,puppetlabs/puppetdb