publish vks release schedule

Author: Hana-Hasa

English/SUMMARY.md

@@ -640,6 +640,7 @@
   * [How VKS works?](vks/mo-hinh-hoat-dong.md)
   * [Announcements and Updates](vks/thong-bao-va-cap-nhat/README.md)
     * [Release notes](vks/thong-bao-va-cap-nhat/release-notes.md)
+    * [Version Release Schedule](vks/thong-bao-va-cap-nhat/vks-release-schedule.md)
   * [Getting Started with VKS](vks/bat-dau-voi-vks/README.md)
     * [Instructions for installing and configuring the kubectl in Kubenetes](vks/bat-dau-voi-vks/instructions-for-installing-and-configuring-the-kubectl-in-kubenetes.md)
     * [Create a Public Cluster](vks/bat-dau-voi-vks/create-a-public-cluster/README.md)

English/vks/thong-bao-va-cap-nhat/vks-release-schedule.md

@@ -154,3 +154,6 @@ VKS follows these principles for Kubernetes version support:
 ## Related Documentation
 
 * [Release Notes](release-notes.md) - View detailed updates and new features of VKS.
+* [Upgrade Kubernetes Version](../cluster/upgrade-cluster-voi-zero-downtime.md) - Guide to upgrade Kubernetes version for cluster.
+* [Auto Upgrade](../upgrade-kubernetes-version/automatically-upgrade.md) - Learn about automatic Kubernetes version upgrade feature.
+* [Manual Upgrade](../upgrade-kubernetes-version/manually-upgrade.md) - Guide to manually upgrade Kubernetes version.

Vietnamese/SUMMARY.md

@@ -713,6 +713,7 @@
   * [Mô hình hoạt động](vks/mo-hinh-hoat-dong.md)
   * [Thông báo và cập nhật](vks/thong-bao-va-cap-nhat/README.md)
     * [Release notes](vks/thong-bao-va-cap-nhat/release-notes.md)
+    * [Lịch phát hành phiên bản](vks/thong-bao-va-cap-nhat/vks-release-schedule.md)
   * [Bắt đầu với VKS](vks/bat-dau-voi-vks/README.md)
     * [Hướng dẫn cài đặt và cấu hình công cụ kubectl trong Kubernetes](vks/bat-dau-voi-vks/huong-dan-cai-dat-va-cau-hinh-cong-cu-kubectl-trong-kubernetes.md)
     * [Khởi tạo một Public Cluster](vks/bat-dau-voi-vks/khoi-tao-mot-public-cluster/README.md)