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- Update outdated files in dev-1.18-ko.7 (#22128)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/concepts/workloads/controllers/statefulset.md

@@ -25,7 +25,7 @@ weight: 40
 
 위의 안정은 파드의 (재)스케줄링 전반에 걸친 지속성과 같은 의미이다.
 만약 애플리케이션이 안정적인 식별자 또는 순차적인 배포,
-삭제 또는 스케일링이 필요하지 않으면, 스테이트리스 레플리카 셋을
+삭제 또는 스케일링이 필요하지 않으면, 스테이트리스 레플리카셋(ReplicaSet)을
 제공하는 워크로드 오브젝트를 사용해서 애플리케이션을 배포해야 한다.
 [디플로이먼트](/ko/docs/concepts/workloads/controllers/deployment/) 또는
 [레플리카셋](/ko/docs/concepts/workloads/controllers/replicaset/)과 같은 컨트롤러가 스테이트리스 요구에 더 적합할 수 있다.