message: infra: slightly improve dns warning
diff: @@ -12,7 +12,7 @@ document contains instructions for them on how to make changes.
  > every domain to Terraform though.
  > **Warning:** [`terraform/services/dns`][dns-dir] only contains the definition
  -> of domain names pointing to resources managed outside of Terraform. When
  +> of DNS records pointing to resources managed outside of Terraform. When
  > Terraform manages a resource it will automatically add the required records
  > on its own. See the service's documentation to learn where its Terraform
  > configuration lives.
  