Update custom-teams-endpoint-authentication-overview.md

Author: petrsvihlik

articles/communication-services/concepts/interop/custom-teams-endpoint-authentication-overview.md

@@ -65,7 +65,7 @@ Before we begin:
 - Alice or her Azure AD administrator needs to give Contoso's Azure Active Directory application consent before the first attempt to sign in. Learn more about [consent](../../../active-directory/develop/consent-framework.md).
 
 Steps:
-1. Authenticate Alice using the Fabrikam application: Alice is authenticated through Fabrikam's application. A standard OAuth flow with Microsoft Authentication Library (MSAL) is used. Make sure you configure MSAL with a correct [authority](../../../active-directory/develop/msal-client-application-configuration#authority). If authentication is successful, the client application, the Contoso app in this case, receives an Azure AD access token with a value of 'A1' and an Object ID of an Azure AD user with a value of 'A2'. Token details are outlined below. Authentication from the developer perspective is explored in this [quickstart](../../quickstarts/manage-teams-identity.md). 
+1. Authenticate Alice using the Fabrikam application: Alice is authenticated through Fabrikam's application. A standard OAuth flow with Microsoft Authentication Library (MSAL) is used. Make sure you configure MSAL with a correct [authority](../../../active-directory/develop/msal-client-application-configuration.md#authority). If authentication is successful, the client application, the Contoso app in this case, receives an Azure AD access token with a value of 'A1' and an Object ID of an Azure AD user with a value of 'A2'. Token details are outlined below. Authentication from the developer perspective is explored in this [quickstart](../../quickstarts/manage-teams-identity.md). 
 1. Get an access token for Alice: The Contoso application by using a custom authentication artifact with value 'B' performs authorization logic to decide whether Alice has permission to exchange the Azure AD access token for an Azure Communication Services access token. After successful authorization, the Contoso application performs control plane logic, using artifacts 'A1', 'A2', and 'A3'. This generates Azure Communication Services access token 'D' for Alice within the Contoso application. This access token can be used for data plane actions in Azure Communication Services, like Calling. The 'A2' and 'A3' artifacts are expected to be passed along with the artifact 'A1' for validation that the Azure AD Token was issued to the expected user and application and will prevent attackers from using the Azure AD access tokens issued to other applications or other users. For more information on how to get 'A' artifacts, see [Receive the Azure AD user token and object ID via the MSAL library](../../quickstarts/manage-teams-identity.md?pivots=programming-language-csharp#step-1-receive-the-azure-ad-user-token-and-object-id-via-the-msal-library) and [Getting Application ID](../troubleshooting-info.md#getting-application-id).
 1. Call Bob: Alice makes a call to Teams user Bob, with Fabrikam's application. The call takes place via the Calling SDK with an Azure Communication Services access token. Learn more about developing custom, Teams apps [in this quickstart](../../quickstarts/voice-video-calling/get-started-with-voice-video-calling-custom-teams-client.md).
 
@@ -79,7 +79,7 @@ Artifacts:
 - Artifact A2
   - Type: Object ID of an Azure AD user
   - Source: Fabrikam's Azure AD tenant
-  - Authority: `https://login.microsoftonline.com/<tenant>/` or `https://login.microsoftonline.com/organizations/` (based on your [scenario](../../../active-directory/develop/msal-client-application-configuration#authority))
+  - Authority: `https://login.microsoftonline.com/<tenant>/` or `https://login.microsoftonline.com/organizations/` (based on your [scenario](../../../active-directory/develop/msal-client-application-configuration.md#authority))
 - Artifact A3
   - Type: Azure AD application ID
   - Source: Contoso application registration's Azure AD tenant