update reference link

Author: duongau

articles/key-vault/general/overview-vnet-service-endpoints.md

@@ -53,7 +53,7 @@ Here's a list of trusted services that are allowed to access a key vault if the
 | Azure Backup|Allow backup and restore of relevant keys and secrets during Azure Virtual Machines backup, by using [Azure Backup](../../backup/backup-overview.md).|
 | Azure Batch | [Configure customer-managed keys for Batch accounts](../../batch/batch-customer-managed-key.md) and [Key Vault for User Subscription Batch accounts](../../batch/batch-account-create-portal.md) |
 | Azure Bot Service | [Azure AI Bot Service encryption for data at rest](/azure/bot-service/bot-service-encryption#grant-azure-bot-service-access-to-a-key-vault) |
-| Azure CDN | [Configure HTTPS on an Azure CDN custom domain: Grant Azure CDN access to your key vault](../../cdn/cdn-custom-ssl.md?tabs=option-2-enable-https-with-your-own-certificate#grant-azure-cdn-access-to-your-key-vault)|
+| Azure CDN | [Configure HTTPS on an Azure CDN custom domain: Grant Azure CDN access to your key vault](../../cdn/cdn-custom-ssl.md?tabs=option-2-enable-https-with-your-own-certificate#set-up-managed-identity-for-azure-cdn)|
 | Azure Container Registry|[Registry encryption using customer-managed keys](../../container-registry/tutorial-enable-customer-managed-keys.md)
 | Azure Data Factory|[Fetch data store credentials in Key Vault from Data Factory](https://go.microsoft.com/fwlink/?linkid=2109491)|
 | Azure Data Lake Store|[Encryption of data in Azure Data Lake Store](../../data-lake-store/data-lake-store-encryption.md) with a customer-managed key.|