Tenth Korean l10n work for release 1.18

- Translate concepts/extend-kubenetes/service-catalog.md in Korean (#23233)
- Translate concepts/configuration/secret.md into Korean (#23110)
- Translate tasks/extend-kubernetes/setup-extension-api-server.md into … (#22574)
- Update outdated files in dev-1.18-ko.10 branch (#23013)

Co-authored-by: Seokho Son <shsongist@gmail.com>
Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: santachopa <santachopa@naver.com>

content/ko/docs/concepts/workloads/controllers/ttlafterfinished.md

@@ -18,12 +18,6 @@ TTL 컨트롤러는 실행이 완료된 리소스 오브젝트의 수명을
 kube-apiserver와 kube-controller-manager와 함께
 [기능 게이트](/ko/docs/reference/command-line-tools-reference/feature-gates/)로 `TTLAfterFinished` 를 활성화할 수 있다.
 
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 <!-- body -->
 
 ## TTL 컨트롤러
@@ -80,7 +74,6 @@ TTL 컨트롤러는 쿠버네티스 리소스에
 
 ## {{% heading "whatsnext" %}}
 
+* [자동으로 잡 정리](/ko/docs/concepts/workloads/controllers/job/#완료된-잡을-자동으로-정리)
 
-[자동으로 잡 정리](/ko/docs/concepts/workloads/controllers/jobs-run-to-completion/#완료된-잡을-자동으로-정리)
-
-[디자인 문서](https://github.com/kubernetes/enhancements/blob/master/keps/sig-apps/0026-ttl-after-finish.md)
+* [디자인 문서](https://github.com/kubernetes/enhancements/blob/master/keps/sig-apps/0026-ttl-after-finish.md)