Fix distribution for zenoss repo in apt README, fixes COOK-890
Fix distribution for zenoss repo in apt README, fixes COOK-890

brocksamson/apt,portertech/apt,cookbooks/hw-apt,tmatilai/chef-apt,Banno/apt,rackspace-cookbooks/rackspace_apt,samstokes/apt,brumschlag/apt,daptiv/apt,chrisroberts/apt,Alukardd/cookbook-apt,aerickson/apt,PolicyStat/apt,MarkRoddy/apt,swistaczek/apt,PolicyStat/apt,jtimberman/apt,nilsga/apt,brumschlag/apt,cookbooks/oc-apt,BarthV/apt,mrdavidlaing/apt,Shopify/chef-apt,trinitronx/apt,mchesnut/apt,h4ck3rm1k3/apt,gswallow/apt,VertiPub/apt,fooforge/apt,Alukardd/cookbook-apt,adambrett-forks/chef-apt,CodePen/apt,chef-cookbooks/apt,patcon/apt,pwnieexpress/apt,whiteley/apt,sabcio/apt,chef-cookbooks/apt,andrewgross/apt,VertiPub/apt,Altiscale/apt,MattMencel/apt,otype/chef,balmbees/apt,Rockstar04/apt,puckel/apt,rockaboxmedia/apt,mattray/apt,gravitystorm/apt,eteeselink/apt,protec-cookbooks/apt,ikkyotech/OpsworksNodeAddons,h4ck3rm1k3/apt,ouranos/apt,edmunds-chef/apt,opscode-cookbooks/apt,Altiscale/apt,Rockstar04/apt,Agiley/apt,BarthV/apt,wrbooth/apt,balmbees/apt,scalarae/apt,pwnieexpress/apt,paulschwarz/apt,tomgl/apt,cookbooks/nd-chef-opscode-apt,puckel/apt,Youscribe/apt,edmunds-chef/apt,josephholsten/opscode-cookbooks-apt,llaurent/opscode-cookbooks-apt,lewg/chef-apt,knuckolls/apt,NREL-cookbooks/apt,hw-cookbooks/apt,ikkyotech/OpsworksNodeAddons,scalarae/apt,Tealium/apt,opscode-cookbooks/apt,ortoo/apt,patcon/apt,yola/apt-cookbook,protec-cookbooks/apt,Tealium/apt,democracyworks/apt