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- Update outdated files in the dev-1.19-ko.4 branch (#24622)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/extend-kubernetes/operator.md

@@ -122,7 +122,7 @@ kubectl edit SampleDB/example-database # 일부 설정을 수동으로 변경하
   * [kubebuilder](https://book.kubebuilder.io/) 사용하기
   * 웹훅(WebHook)과 함께 [Metacontroller](https://metacontroller.app/)를
     사용하여 직접 구현하기
-  * [오퍼레이터 프레임워크](https://github.com/operator-framework/getting-started) 사용하기
+  * [오퍼레이터 프레임워크](https://operatorframework.io) 사용하기
 * 다른 사람들이 사용할 수 있도록 자신의 오퍼레이터를 [게시](https://operatorhub.io/)하기
 * 오퍼레이터 패턴을 소개한 [CoreOS 원본 기사](https://coreos.com/blog/introducing-operators.html) 읽기
 * 오퍼레이터 구축을 위한 모범 사례에 대한 구글 클라우드(Google Cloud)의 [기사](https://cloud.google.com/blog/products/containers-kubernetes/best-practices-for-building-kubernetes-operators-and-stateful-apps) 읽기