Sixth Korean l10n work for release 1.18

- Update outdated files in dev-1.18-ko.6 partly (#21714)
- Translate StorageClass to Korean word (#21805)
- Translate StatefulSet to Korean word in pods.md (#21794)
- Translate tasks/run-application/delete-stateful-set/ in Korean (#21686)
- Translate tasks/administer-cluster/change-default-storage-class in Korean (#21801)
- update outdated docs (#21940)
- Modify spacing term StatefulSet in Korean (#21871)
- Translate /tasks/administer-cluster/coredns in Korean (#21876)
- Fix typo in k8s.io/ko/docs/contribute/new-content/new-content/ (#21975)
- Translation error correction in /concepts/containers/runtime-class.md (#21868)
- Translate tasks/tls/certificate-rotation/ in Korean (#21838)
- Translate /tasks/configure-pod-container/static-pod in Korean (#21798)
- Update to Outdated files in the dev-1.18-ko.6 branch - (1/4) (#21911)
- Fix English bugs in Korean documentation (#21994)
- Update outdated dev-1.18-ko.6 partly (#22067)

Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: PyungHo Yoon <learder@gmail.com>
Co-authored-by: Yuk, Yongsu <ysyukr@gmail.com>
Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: Seokho Son <shsongist@gmail.com>
Co-authored-by: Jordy Ruiter <jordy.ruiter@gmail.com>
Co-authored-by: bluefriday <bluefriday86@gmail.com>
Co-authored-by: Dajin Gwon <d.gweon@samsung.com>
Co-authored-by: Hyungseok Lee <hs0426.lee@samsung.com>
Co-authored-by: Jihoon Seo <jihoon.seo@etri.re.kr>
Co-authored-by: coolguyhong <podolsmith@naver.com>
Co-authored-by: jmyung <jesang.myung@gmail.com>
Co-authored-by: June Yi <june.yi@samsung.com>

content/ko/docs/tasks/administer-cluster/network-policy-provider/calico-network-policy.md

@@ -1,5 +1,4 @@
 ---
-reviewers:
 title: 네트워크 폴리시로 캘리코(Calico) 사용하기
 content_type: task
 weight: 10
@@ -52,4 +51,3 @@ Kubeadm을 이용해서 15분 이내에 지역 단일 호스트 캘리코 클러
 클러스터가 동작하면, 쿠버네티스 네트워크 폴리시(NetworkPolicy)를 시도하기 위해
 [네트워크 폴리시 선언하기](/docs/tasks/administer-cluster/declare-network-policy/)를 따라 할 수 있다.
 
-

content/ko/docs/tasks/administer-cluster/network-policy-provider/kube-router-network-policy.md

@@ -1,10 +1,11 @@
 ---
-reviewers:
 title: 네트워크 폴리시로 큐브 라우터(Kube-router) 사용하기
 content_type: task
 weight: 30
 ---
 
+
+
 <!-- overview -->
 이 페이지는 네트워크 폴리시(NetworkPolicy)로 [큐브 라우터(Kube-router)](https://github.com/cloudnativelabs/kube-router)를 사용하는 방법을 살펴본다.
 

content/ko/docs/tasks/administer-cluster/network-policy-provider/romana-network-policy.md

@@ -1,10 +1,11 @@
 ---
-reviewers:
 title: 네트워크 폴리시로 로마나(Romana)
 content_type: task
 weight: 40
 ---
 
+
+
 <!-- overview -->
 
 이 페이지는 네트워크 폴리시(NetworkPolicy)로 로마나(Romana)를 사용하는 방법을 살펴본다.

content/ko/docs/tasks/administer-cluster/network-policy-provider/weave-network-policy.md

@@ -1,5 +1,4 @@
 ---
-reviewers:
 title: 네트워크 폴리시로 위브넷(Weave Net) 사용하기
 content_type: task
 weight: 50