(Azure CXP Community) update instructions

fixes MicrosoftDocs/azure-docs#110650

Author: chillryan

articles/static-web-apps/custom-domain-azure-dns.md

@@ -62,13 +62,15 @@ Now that your domain is configured for Azure to manage the DNS, you can now link
 
 2. Select **+ Add**.
 
-3. In the *Enter domain* tab, enter your domain name prefixed with **www**.
+3. In the *Domain name* box, enter your domain name prefixed with **www**.
 
     For instance, if your domain name is `example.com`, enter `www.example.com` into this box.
+    > [!NOTE]
+    > If you elected to *Add custom domain on Azure DNS*, you will have the option to select the *DNS zone* and the following steps will be done automatically for you once you select **Add**.
 
 4. Select **Next**.
 
-5. In the *Validate + Configure* tab, enter the following values.
+5. In the *Validate + add* tab, enter the following values.
 
     | Setting | Value |
     |---|---|