Added cross reference link to truncating revision labels
Added cross reference link to truncating revision labels

ketan/docs.go.cd,gocd/docs.go.cd,ketan/docs.go.cd,gocd/docs.go.cd,gocd/docs.go.cd,ketan/docs.go.cd,gocd/developer.go.cd,gocd/developer.go.cd,gocd/developer.go.cd