updated a link

Author: Kalyan Krishna

5-WebApp-AuthZ/5-1-Roles/README.md

@@ -30,7 +30,7 @@ This application implements RBAC using Azure AD's Application Roles & Role Claim
 
 Using RBAC with Application Roles and Role Claims, developers can securely enforce authorization policies with minimal effort on their part.
 
-- A Microsoft Identity Platform Office Hours session covered Azure AD App roles and security groups, featuring this scenario and this sample. A recording of the session is is provided in this video [Using Security Groups and Application Roles in your apps](https://www.youtube.com/watch?v=V8VUPixLSiM)
+- A Microsoft Identity Platform Office Hours session covered Azure AD App roles and security groups, featuring this scenario and this sample. A recording of the session is is provided in this video [Using Security Groups and Application Roles in your apps](https://www.youtube.com/watch?v=LRoc-na27l0)
 
 For more information about how the protocols work in this scenario and other scenarios, see [Authentication Scenarios for Azure AD](http://go.microsoft.com/fwlink/?LinkId=394414).