Update PLS Limitations

I could be wrong, but I believe PLS can now do cross-region links.

Author: Blake Bergquist

articles/private-link/private-link-service-overview.md

@@ -96,7 +96,6 @@ The following are the known limitations when using the Private Link service:
 - Supported only on Standard Load Balancer 
 - Supports IPv4 traffic only
 - Supports TCP traffic only
-- Only reachable from private endpoints in the same region
 - Create and Manage experience from Azure portal is not supported
 - Clients connection information using proxy protocol is not available to service provider