Fifth Korean l10n work for release 1.18

- Update to Outdated files in the dev-1.18-ko.5 branch. (#21450)
- Translate tasks/run-application/run-single-instance-stateful-application in Korean (#21174)
- Translate tasks/debug-application-cluster/determine-reason-pod-failure in Korean (#21515)
- Translate tasks/manage-hugepages/scheduling-hugepages.md into Korean (#21337)
- Translate tasks/extend-kubectl/kubectl-plugins.md into Korean (#21454)
- Translate tasks/manage-daemon/rollback-daemon-set.md into Korean (#21376)
- Translate contribute/generate-ref-docs/overview in Korean (#21466)
- Translate reference/kubectl/overview.md into Korean (#21552)
- Translate configure-pod-initialization in Korean (#21600)
- Translate tasks/manage-daemon/update-daemon-set.md into Korean (#21378)

Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: Yoon <learder@gmail.com>
Co-authored-by: Yuk, Yongsu <ysyukr@gmail.com>
Co-authored-by: Seokho Son <shsongist@gmail.com>
Co-authored-by: guslcho <jamie14@naver.com>
Co-authored-by: DongMoon Kim <dmoons.kim@gmail.com>
Co-authored-by: bluefriday <bluefriday86@gmail.com>

content/ko/examples/pods/init-containers.yaml

@@ -0,0 +1,29 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: init-demo
+spec:
+  containers:
+  - name: nginx
+    image: nginx
+    ports:
+    - containerPort: 80
+    volumeMounts:
+    - name: workdir
+      mountPath: /usr/share/nginx/html
+  # 이 컨테이너들은 파드 초기화 중에 실행된다.
+  initContainers:
+  - name: install
+    image: busybox
+    command:
+    - wget
+    - "-O"
+    - "/work-dir/index.html"
+    - http://kubernetes.io
+    volumeMounts:
+    - name: workdir
+      mountPath: "/work-dir"
+  dnsPolicy: Default
+  volumes:
+  - name: workdir
+    emptyDir: {}