(Azure CXP) update link to CloudCover episode 177

https://github.com/MicrosoftDocs/azure-docs/issues/84064

Author: Grace-MacJones-MSFT

articles/api-management/api-management-caching-policies.md

@@ -152,7 +152,7 @@ The `cache-store` policy caches responses according to the specified cache setti
 ```
 
 #### Example using policy expressions
-This example shows how to configure API Management response caching duration that matches the response caching of the backend service as specified by the backed service's `Cache-Control` directive. For a demonstration of configuring and using this policy, see [Cloud Cover Episode 177: More API Management Features with Vlad Vinogradsky](https://azure.microsoft.com/documentation/videos/episode-177-more-api-management-features-with-vlad-vinogradsky/) and fast-forward to 25:25.
+This example shows how to configure API Management response caching duration that matches the response caching of the backend service as specified by the backed service's `Cache-Control` directive. For a demonstration of configuring and using this policy, see [Cloud Cover Episode 177: More API Management Features with Vlad Vinogradsky](https://channel9.msdn.com/Shows/Cloud+Cover/Episode-177-More-API-Management-Features-with-Vlad-Vinogradsky) and fast-forward to 25:25.
 
 ```xml
 <!-- The following cache policy snippets demonstrate how to control API Management response cache duration with Cache-Control headers sent by the backend service. -->