Third Korean l10n work for release 1.18

- Translate cluster-administration/networking.md in Korean
- Fix issue with concepts/storage/volumes.md
- Translate /concepts/configuration/pod-overhead in Korean
- Update to Outdated files in the dev-1.18-ko.3 branch.
- Translate concepts/configuration/configmap.md in Korean
- Translate contribute/review/reviewing-prs/ in Korean
- Translate concepts/configuration/pod-priority-preemption.md in Korean
- Translate tasks/configure-pod-container/configure-volume-storage in Korean
- Translate contribute/new-content/new-content/ in Korean
- Translate concepts/architecture/control-plane-node-communication.md in Korean
- Restore the deleted master-node-communication.md file
- Translate concepts/cluster-administration/addons.md in Korean
- Translate contribute/new-content/overview/ in Korean
- Translate tasks/tools/install-kubectl.md in Korean
- Translate concepts/configuration/manage-resources-containers.md in Korean
- Translate tasks/administer-cluster/kubeadm/kubeadm-upgrade/ in Korean
- add new words to Korean glossary and fix minor
- Translate contribute/style/_index.md in Korean
- Translate concepts/cloud-administration/cloud-providers.md in Korean
- Translate contribute/review/for-approvers.md in Korean

Co-authored-by:    Jerry Park <jaehwa@gmail.com>
Co-authored-by:    Seokho Son <shsongist@gmail.com>
Co-authored-by:    jmyung <jesang.myung@gmail.com>
Co-authored-by:    coolguyhong <podolsmith@naver.com>
Co-authored-by:    Yuk, Yongsu <ysyukr@gmail.com>
Co-authored-by:    bluefriday <bluefriday86@gmail.com>
Co-authored-by:    SangshikLee <neolss@gmail.com>

content/ko/docs/tasks/administer-cluster/highly-available-master.md

@@ -6,7 +6,7 @@ content_template: templates/task
 
 {{% capture overview %}}
 
-{{< feature-state for_k8s_version="1.5" state="alpha" >}}
+{{< feature-state for_k8s_version="v1.5" state="alpha" >}}
 
 구글 컴퓨트 엔진(Google Compute Engine, 이하 GCE)의 `kube-up`이나 `kube-down` 스크립트에 쿠버네티스 마스터를 복제할 수 있다.
 이 문서는 kube-up/down 스크립트를 사용하여 고가용(HA) 마스터를 관리하는 방법과 GCE와 함께 사용하기 위해 HA 마스터를 구현하는 방법에 관해 설명한다.