Update vnet-custom-internal.md

Reverted to more general wording for DNS setup

Author: gabesmsft

articles/container-apps/vnet-custom-internal.md

@@ -363,7 +363,7 @@ Remove-AzResourceGroup -Name $ResourceGroupName -Force
 
 ## Additional resources
 
-- To use VNET-scope ingress, you must configure [DNS](./networking.md#dns).
+- To set up DNS name resolution for internal services, you must set up [DNS](./networking.md#dns).
 
 ## Next steps