Remove trailing newline from kubernetes version marker
Remove trailing newline from kubernetes version marker

Should fix the trailing "%0A" here: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/e2e-kops-aws-misc-arm64-ci/1369566440318832640#1:build-log.txt%3A90

kubernetes/kops,justinsb/kops,kubernetes/kops,justinsb/kops,kubernetes/kops,justinsb/kops