Update suggested NodeJS version
Update suggested NodeJS version

Updated to match what it is currently built with.
ketan/gocd,gocd/gocd,ketan/gocd,Skarlso/gocd,Skarlso/gocd,ketan/gocd,ketan/gocd,Skarlso/gocd,ketan/gocd,gocd/gocd,gocd/gocd,Skarlso/gocd,gocd/gocd,ketan/gocd,gocd/gocd,Skarlso/gocd,Skarlso/gocd,gocd/gocd