Eighth Korean l10n work for release 1.18

- Translate tasks/administer-cluster/declare-network-policy in Korean (#22526)
- Translate tasks/debug-application-cluster/debug-init-containers in Korean (#22608)
- Fix a missing markdown syntax to enable external link (#22661)
- Translate tasks/administer-cluster/change-pv-reclaim-policy in Korean (#22551)
- Update docs/contribute/participate/ for Korean (#22605)
- Update outdated files in dev-1.18-ko.8 (#22466)
- Translate tasks/administer-cluster/dns-custom-nameservers in Korean (#22524)

Co-authored-by: Daehyun Paik <paik@a30a.dev>
Co-authored-by: Jerry Park <jaehwa@gmail.com>
Co-authored-by: bluefriday <bluefriday86@gmail.com>
Co-authored-by: June Yi <june.yi@samsung.com>
Co-authored-by: Jesang Myung <jesang.myung@gmail.com>
Co-authored-by: Seokho Son <shsongist@gmail.com>

content/ko/docs/tutorials/_index.md

@@ -1,6 +1,7 @@
 ---
 title: 튜토리얼
 main_menu: true
+no_list: true
 weight: 60
 content_type: concept
 ---
@@ -14,8 +15,6 @@ content_type: concept
 각 튜토리얼을 따라하기 전에, 나중에 참조할 수 있도록
 [표준 용어집](/ko/docs/reference/glossary/) 페이지를 북마크하기를 권한다.
 
-
-
 <!-- body -->
 
 ## 기초
@@ -64,13 +63,8 @@ content_type: concept
 
 * [소스 IP 주소 이용하기](/ko/docs/tutorials/services/source-ip/)
 
-
-
 ## {{% heading "whatsnext" %}}
 
-
 튜토리얼을 작성하고 싶다면, 튜토리얼 페이지 유형에 대한 정보가 있는
 [콘텐츠 페이지 유형](/docs/contribute/style/page-content-types/)
 페이지를 참조한다.
-
-