Forth Korean l10n work for release-1.19

- Fix ko glossary managed service title (#24621)
- Translate reference/glossary/service-broker.md in Korean (#24632)
- Translate reference/command-line-tools-reference/kubelet-authentication-authorization.md into korean (#24623)
- Update outdated files in the dev-1.19-ko.4 branch (#24622)
- Translate setup/production-environment/tools/kubeadm/self-hosting/ into Korean (#24655)
- Translate reference/kubectl/kubectl.md into Korean (#24482)
- docs: fix typo (#24713)
- Translate connecting-frontend-backend to Korean (#24422)
- Translate reference/kubectl/conventions.md into Korean (#24614)
- Translate k8s 1.19 relaese note in korean (#24633)

Co-authored-by: seokho-son <shsongist@gmail.com>
Co-authored-by: santachopa <santachopa@naver.com>
Co-authored-by: kosehy@gmail.com <kosehy@gmail.com>
Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: markruler <csu0414@gmail.com>
Co-authored-by: noel <neutiyoo@gmail.com>
Co-authored-by: coolguyhong <podolsmith@naver.com>
Co-authored-by: chhanz <han0495@gmail.com>
Co-authored-by: bluefriday <bluefriday86@gmail.com>

content/ko/docs/concepts/containers/runtime-class.md

@@ -178,7 +178,7 @@ PodOverhead를 사용하려면, PodOverhead [기능 게이트](/ko/docs/referenc
 ## {{% heading "whatsnext" %}}
 
 
-- [런타임클래스 설계](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/runtime-class.md)
-- [런타임클래스 스케줄링 설계](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/runtime-class-scheduling.md)
+- [런타임클래스 설계](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/585-runtime-class/README.md)
+- [런타임클래스 스케줄링 설계](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/585-runtime-class/README.md#runtimeclass-scheduling)
 - [파드 오버헤드](/ko/docs/concepts/configuration/pod-overhead/) 개념에 대해 읽기
 - [파드 오버헤드 기능 설계](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/20190226-pod-overhead.md)