Fix a minor typo in 2.1 dev env setup guide
Fix a minor typo in 2.1 dev env setup guide
gocd/docs.go.cd,gocd/developer.go.cd,gocd/docs.go.cd,ketan/docs.go.cd,ketan/docs.go.cd,gocd/developer.go.cd,gocd/docs.go.cd,ketan/docs.go.cd,gocd/developer.go.cd