(docs) Fix some spelling mistakes and one word choice.
(docs) Fix some spelling mistakes and one word choice.

wkalt/puppetdb,senior/puppetdb,waynr/puppetdb,waynr/puppetdb,puppetlabs/puppetdb,ajroetker/puppetdb,shrug/puppetdb,highb/puppetdb,shrug/puppetdb,kbrezina/puppetdb,johnduarte/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,shrug/puppetdb,wkalt/puppetdb,johnduarte/puppetdb,rbrw/puppetdb,mullr/puppetdb,waynr/puppetdb,senior/puppetdb,mullr/puppetdb,highb/puppetdb,kbrezina/puppetdb,rbrw/puppetdb,rbrw/puppetdb,johnduarte/puppetdb,highb/puppetdb,senior/puppetdb,kbarber/puppetdb,rbrw/puppetdb,senior/puppetdb,grimradical/puppetdb,mullr/puppetdb,kbrezina/puppetdb,puppetlabs/puppetdb,shrug/puppetdb,wkalt/puppetdb,johnduarte/puppetdb,ajroetker/puppetdb,kbrezina/puppetdb,kbarber/puppetdb,kbarber/puppetdb,puppetlabs/puppetdb,waynr/puppetdb,grimradical/puppetdb,grimradical/puppetdb,mullr/puppetdb,ajroetker/puppetdb,ajroetker/puppetdb,wkalt/puppetdb,puppetlabs/puppetdb,highb/puppetdb,kbarber/puppetdb,grimradical/puppetdb,rbrw/puppetdb