Update private-endpoint.md

Add link to troubleshooting article

Author: dlepow

articles/api-management/private-endpoint.md

@@ -30,7 +30,7 @@ With a private endpoint and Private Link, you can:
 - Limit incoming traffic only to private endpoints, preventing data exfiltration.
 
 > [!IMPORTANT]
-> * API Management support for private endpoints is currently in preview.
+> * API Management support for private endpoints is currently in **preview**.
 > * To enable private endpoints, the API Management instance can't already be configured with an external or internal [virtual network](virtual-network-concepts.md).  
 > * A private endpoint connection supports only incoming traffic to the API Management instance. 
 
@@ -234,4 +234,5 @@ To connect to 'Microsoft.ApiManagement/service/my-apim-service', please use the
 * Use [policy expressions](api-management-policy-expressions.md#ref-context-request) with the `context.request` variable to identify traffic from the private endpoint.
 * Learn more about [private endpoints](../private-link/private-endpoint-overview.md) and [Private Link](../private-link/private-link-overview.md).
 * Learn more about [managing private endpoint connections](../private-link/manage-private-endpoint.md).
+* [Troubleshoot Azure private endpoint connectivity problems](../private-link/troubleshoot-private-endpoint-connectivity.md).
 * Use a [Resource Manager template](https://azure.microsoft.com/resources/templates/api-management-private-endpoint/) to create an API Management instance and a private endpoint with private DNS integration.