Fix typo in README.md
Fix typo in README.md

Signed-off-by: Deepak Giridharagopal <d11186354d1ef01ca06ae37d7e23e827da13e85f@puppetlabs.com>

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