Tenth Korean l10n work for release 1.18

- Translate concepts/extend-kubenetes/service-catalog.md in Korean (#23233)
- Translate concepts/configuration/secret.md into Korean (#23110)
- Translate tasks/extend-kubernetes/setup-extension-api-server.md into … (#22574)
- Update outdated files in dev-1.18-ko.10 branch (#23013)

Co-authored-by: Seokho Son <shsongist@gmail.com>
Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: santachopa <santachopa@naver.com>

content/ko/docs/concepts/configuration/manage-resources-containers.md

@@ -132,11 +132,9 @@ metadata:
   name: frontend
 spec:
   containers:
-  - name: db
-    image: mysql
+  - name: app
+    image: images.my-company.example/app:v4
     env:
-    - name: MYSQL_ROOT_PASSWORD
-      value: "password"
     resources:
       requests:
         memory: "64Mi"
@@ -144,8 +142,8 @@ spec:
       limits:
         memory: "128Mi"
         cpu: "500m"
-  - name: wp
-    image: wordpress
+  - name: log-aggregator
+    image: images.my-company.example/log-aggregator:v6
     resources:
       requests:
         memory: "64Mi"
@@ -330,18 +328,15 @@ metadata:
   name: frontend
 spec:
   containers:
-  - name: db
-    image: mysql
-    env:
-    - name: MYSQL_ROOT_PASSWORD
-      value: "password"
+  - name: app
+    image: images.my-company.example/app:v4
     resources:
       requests:
         ephemeral-storage: "2Gi"
       limits:
         ephemeral-storage: "4Gi"
-  - name: wp
-    image: wordpress
+  - name: log-aggregator
+    image: images.my-company.example/log-aggregator:v6
     resources:
       requests:
         ephemeral-storage: "2Gi"
@@ -757,4 +752,4 @@ LastState: map[terminated:map[exitCode:137 reason:OOM Killed startedAt:2015-07-0
 
 * [ResourceRequirements](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#resourcerequirements-v1-core) API 레퍼런스 읽어보기
 
-* XFS의 [프로젝트 쿼터](http://xfs.org/docs/xfsdocs-xml-dev/XFS_User_Guide/tmp/en-US/html/xfs-quotas.html)에 대해 읽어보기
+* XFS의 [프로젝트 쿼터](https://xfs.org/docs/xfsdocs-xml-dev/XFS_User_Guide/tmp/en-US/html/xfs-quotas.html)에 대해 읽어보기