Clarify CNAME record value for private Pages sites in the subdomain section

Author: 7kaji

content/pages/configuring-a-custom-domain-for-your-github-pages-site/managing-a-custom-domain-for-your-github-pages-site.md

@@ -123,6 +123,8 @@ To set up a `www` or custom subdomain, such as `www.example.com` or `blog.exampl
 
 1. Navigate to your DNS provider and create a `CNAME` record that points your subdomain to the default domain for your site. For example, if you want to use the subdomain `www.example.com` for your user site, create a `CNAME` record that points `www.example.com` to `<user>.github.io`. If you want to use the subdomain `another.example.com` for your organization site, create a `CNAME` record that points `another.example.com` to `<organization>.github.io`. The `CNAME` record should always point to `<user>.github.io` or `<organization>.github.io`, excluding the repository name. {% data reusables.pages.contact-dns-provider %} {% data reusables.pages.default-domain-information %}
 
+   These `CNAME` record values are the same for both publicly and privately published {% data variables.product.prodname_pages %} sites. Do not point the `CNAME` record to the unique `*.pages.github.io` subdomain shown in your repository's {% data variables.product.prodname_pages %} settings. Privately published sites are available with {% data variables.product.prodname_ghe_cloud %}. For more information, see [AUTOTITLE](/enterprise-cloud@latest/pages/getting-started-with-github-pages/changing-the-visibility-of-your-github-pages-site){% ifversion fpt %} in the {% data variables.product.prodname_ghe_cloud %} documentation{% endif %}.
+
 {% indented_data_reference reusables.pages.wildcard-dns-warning spaces=3 %}
 {% data reusables.command_line.open_the_multi_os_terminal %}
 1. To confirm that your DNS record configured correctly, use the `dig` command, replacing _WWW.EXAMPLE.COM_ with your subdomain.