[DNS] Update CLI commands to verify CF nameservers (#26212)

* Revise DNS commands in setup documentation

Updated DNS verification commands for macOS/Linux and Windows.

* Use placeholders and update windows commmands as well

---------

Co-authored-by: Rebecca Tamachiro <[email protected]>

Author: eatg007-coder

src/content/docs/dns/zone-setups/full-setup/setup.mdx

@@ -113,13 +113,17 @@ When your domain is **Active**:
 - CLI commands will show your Cloudflare-assigned nameservers
 
 ```txt
-*Linux/Unix*
-dig <DOMAIN_NAME> +trace @1.1.1.1
-dig <DOMAIN_NAME> +trace @8.8.8.8
+*macOS/Linux*
+
+whois <DOMAIN_NAME>
+dig ns <DOMAIN_NAME> @1.1.1.1
+dig ns <DOMAIN_NAME> @8.8.8.8
+dig <DOMAIN_NAME> +trace
 
 *Windows*
-nslookup <DOMAIN_NAME> 1.1.1.1
-nslookup <DOMAIN_NAME> 8.8.8.8
+
+nslookup -type=ns <DOMAIN_NAME> 1.1.1.1
+nslookup -type=ns <DOMAIN_NAME> 8.8.8.8
 ```
 
 :::note