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- Update outdated files in the dev-1.19-ko.4 branch (#24622)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/workloads/controllers/garbage-collection.md

@@ -152,7 +152,7 @@ kubectl delete replicaset my-repset --cascade=false
 ### 디플로이먼트에 대한 추가 참고
 
 1.7 이전에서는 디플로이먼트와 캐스케이딩 삭제를 사용하면 반드시 `propagationPolicy: Foreground`
-를 사용해서 생성된 레플리카셋 뿐만 아니라 해당 파드도 삭제해야 한다. 만약 이 _propagationPolicy_
+를 사용해서 생성된 레플리카셋뿐만 아니라 해당 파드도 삭제해야 한다. 만약 이 _propagationPolicy_
 유형을 사용하지 않는다면, 레플리카셋만 삭제되고 파드는 분리된 상태로 남을 것이다.
 더 많은 정보는 [kubeadm/#149](https://github.com/kubernetes/kubeadm/issues/149#issuecomment-284766613)를 본다.