Seventh Korean l10n work for release 1.18

- Translate reference/command-line-tools-reference/feature-gates.md int… (#22240)
- Fix issue of broken links to translated docs (#22105)
- Fix issue of document link in some ko documents (#22379)
- Translate tasks/administer-cluster/access-cluster-services.md into Ko… (#21776)
- Fix issue with 'Linux' and 'Windows' notation in Korean docs (#22362)
- Fix issue of broken links to translated docs #2 (#22270)
- Fix issue with k8s.io/ko/docs/concepts/overview/kubernetes-api.md (#22261)
- Fix issue with k8s.io/ko/docs/concepts/overview/working-with-objects/ (#22263)
- Fix incorrect notation of 'directory' into Korean (#22155)
- Fix issue with k8s.io/ko/docs/concepts/overview/components.md (#22232)
- Update outdated files in dev-1.18-ko.7 (#22128)
- Modify spacing term ReplicaSet in Korean (#22148)
- Translate tasks/administer-cluster/extended-resource-node.md into Korean (#21849)
- Translate tasks/administer-cluster/access-cluster-api.md into Korean (#21730)

Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: woopyoung <ywp041@gmail.com>
Co-authored-by: coolguyhong <podolsmith@naver.com>
Co-authored-by: PyungHo Yoon <learder@gmail.com>
Co-authored-by: Seokho Son <shsongist@gmail.com>
Co-authored-by: jmyung <jesang.myung@gmail.com>
Co-authored-by: Ian Y. Choi <ianyrchoi@gmail.com>

content/ko/docs/reference/using-api/client-libraries.md

@@ -16,7 +16,7 @@ API 호출 또는 요청/응답 타입을 직접 구현할 필요는 없다.
 
 클라이언트 라이브러리는 대체로 인증과 같은 공통의 태스크를 처리한다.
 대부분의 클라이언트 라이브러리들은 API 클라이언트가 쿠버네티스 클러스터 내부에서 동작하는 경우 인증
-또는 [kubeconfig 파일](/docs/tasks/access-application-cluster/authenticate-across-clusters-kubeconfig/) 포맷을 통해
+또는 [kubeconfig 파일](/ko/docs/tasks/access-application-cluster/configure-access-multiple-clusters/) 포맷을 통해
 자격증명과 API 서버 주소를 읽을 수 있게
 쿠버네티스 서비스 어카운트를 발견하고 사용할 수 있다.