update tutorial link (#245)

* update tutorial link
mosn · Dec 25, 2023 · a63ea57 · a63ea57
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diff --git a/content/en/docs/tutorial/index.md b/content/en/docs/tutorial/index.md
@@ -6,15 +6,15 @@ menu:
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-MOSN tutorials use KataCoda as an online environment to provide interactive learning without having to deploy your own environment. To experience it, visit [MOSN Tutorials on KataCoda](https://www.katacoda.com/mosn/courses/istio).
+MOSN tutorials use Killercoda as an online environment to provide interactive learning without having to deploy your own environment. To experience it, visit [MOSN Tutorials on Killercoda](https://killercoda.com/mosn-tutorial/course/istio).
 
 ## Courses list
 
 Here are the courses we have supported in the list.
 
-- [MOSN with Istio](https://katacoda.com/mosn/courses/istio/mosn-with-istio)
-- [Istio with MOSN adapt dubbo](https://www.katacoda.com/mosn/courses/istio/istio-mosn-adapt-dubbo)
-- [MOSN with SkyWalking](https://www.katacoda.com/mosn/courses/istio/mosn-with-skywalking)
+- [MOSN with Istio](https://killercoda.com/mosn-tutorial/course/istio/mosn-with-istio)
+- [Istio with MOSN adapt dubbo](https://killercoda.com/mosn-tutorial/course/istio/istio-mosn-adapt-dubbo)
+- [MOSN with SkyWalking](https://killercoda.com/mosn-tutorial/course/istio/mosn-with-skywalking)
 
 ## Contributing
 

diff --git a/content/zh/docs/user-guide/start/tutorial/index.md b/content/zh/docs/user-guide/start/tutorial/index.md
@@ -7,15 +7,15 @@ menu:
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-MOSN 教程使用 KataCoda 作为线上环境，无需自己部署环境，提供交互式的学习体验，请访问 [KataCoda 上的 MOSN 教程](https://www.katacoda.com/mosn/courses/istio)。
+MOSN 教程使用 Killercoda 作为线上环境，无需自己部署环境，提供交互式的学习体验，请访问 [Killercoda 上的 MOSN 教程](https://killercoda.com/mosn-tutorial/course/istio)。
 
 ## 教程列表
 
 当前支持的教程如下。
 
-- [在 Istio 中集成 MOSN](https://katacoda.com/mosn/courses/istio/mosn-with-istio)
-- [使用 MOSN 在 Istio 环境中运行 Dubbo](https://www.katacoda.com/mosn/courses/istio/istio-mosn-adapt-dubbo)
-- [在 MOSN 中集成 SkyWalking](https://www.katacoda.com/mosn/courses/istio/mosn-with-skywalking)
+- [在 Istio 中集成 MOSN](https://killercoda.com/mosn-tutorial/course/istio/mosn-with-istio)
+- [使用 MOSN 在 Istio 环境中运行 Dubbo](https://killercoda.com/mosn-tutorial/course/istio/istio-mosn-adapt-dubbo)
+- [在 MOSN 中集成 SkyWalking](https://killercoda.com/mosn-tutorial/course/istio/mosn-with-skywalking)
 
 ## 贡献教程