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- Update outdated files in dev-1.18-ko.6 partly (#21714)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- update outdated docs (#21940)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- Update to Outdated files in the dev-1.18-ko.6 branch - (1/4) (#21911)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- Update outdated dev-1.18-ko.6 partly (#22067)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/kubeadm/kubeadm-certs.md

@@ -241,4 +241,8 @@ CSR에는 인증서 이름, 도메인 및 IP가 포함되지만, 용도를 지
 [cert-cas]: /ko/docs/setup/best-practices/certificates/#단일-루트-ca
 [cert-table]: /ko/docs/setup/best-practices/certificates/#모든-인증서
 
+## 인증 기관(CA) 순환(rotation) {#certificate-authority-rotation}
 
+Kubeadm은 CA 인증서의 순환이나 교체 기능을 기본적으로 지원하지 않는다.
+
+CA의 수동 순환이나 교체에 대한 보다 상세한 정보는 [CA 인증서 수동 순환](/docs/tasks/tls/manual-rotation-of-ca-certificates/) 문서를 참조한다.

content/ko/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade.md

@@ -294,6 +294,7 @@ sudo kubeadm upgrade apply
 kubelet을 다시 시작한다.
 
 ```shell
+sudo systemctl daemon-reload
 sudo systemctl restart kubelet
 ```
 
@@ -372,6 +373,7 @@ sudo systemctl restart kubelet
 -  kubelet을 다시 시작한다.
 
     ```shell
+    sudo systemctl daemon-reload
     sudo systemctl restart kubelet
     ```