Update articles/container-apps/rule-based-routing-custom-domain.md

Co-authored-by: Craig Shoemaker <[email protected]>

Author: LianaAdaza

articles/container-apps/rule-based-routing-custom-domain.md

@@ -24,7 +24,7 @@ HTTP route configurations support custom domains, allowing you to route traffic
 > [!NOTE]
 > To set up your own custom domain and certificate, see [Custom domain names and free managed certificates](./custom-domains-managed-certificates.md).
 >
-> If you set `bindingType: "Auto"`, you don't need a `certificateId`. Once you provision the certificate, Container Apps will automatically add it to the route spec and bind it to the domain. The site will only be accessible over HTTP, not HTTPS, until the provisioning is completed.
+> If you set `bindingType: "Auto"`, you don't need a `certificateId`. Create the route first so the certificate registration check for ownership succeeds. Once you set up the certificate, Container Apps automatically adds it to the route spec and binds it to the domain. The site is only accessible over HTTP (not HTTPS) until setup is complete.
 
 ## Configuration