fixes

Author: asudbring

articles/virtual-network/nat-gateway/index.yml

@@ -87,7 +87,7 @@ landingContent:
           - text: Architecture Framework for NAT gateway
             url: /azure/architecture/networking/guide/well-architected-network-address-translation-gateway
 
-      - linkListType: reference
+      - linkListType: concept
         links:
           - text: Azure NAT Gateway considerations for multitenancy
             url: /azure/architecture/guide/multitenant/service/nat-gateway