[ja] move version-skew-policy.md from content/ja/docs/setup/release/ to content/ja/releases/ (#44995)

* renamed:    content/ja/docs/setup/release/version-skew-policy.md -> content/ja/releases/version-skew-policy.md

* del: content/ja/docs/setup/release/_index.md

* update: type

* update: L2

Co-authored-by: inukai <[email protected]>

* update: del weight & add description

Co-authored-by: inukai <[email protected]>

---------

Co-authored-by: inukai <[email protected]>

Author: Okabe-Junya

content/ja/docs/setup/release/_index.md

@@ -1,7 +1,8 @@
 ---
-title: Kubernetesバージョンとバージョンスキューサポートポリシー
-content_type: concept
-weight: 30
+title: バージョンスキューポリシー
+type: docs
+description: >
+  さまざまなKubernetesコンポーネント間でサポートされる最大のバージョンスキュー。
 ---
 
 <!-- overview -->