Update docs/reference/cli/commands.md

Co-authored-by: adam jones <[email protected]>

Author: joelverhagen

docs/reference/cli/commands.md

@@ -82,7 +82,7 @@ mcp-publisher login dns --domain=example.com --private-key=HEX_KEY [--registry=U
 - Grants access to `com.example.*` namespaces
 - Requires Ed25519 private key (64-character hex) or ECDSA P-384 private key (96-character hex)
 
-**Setup:** (for Ed25519)
+**Setup:** (for Ed25519, recommended)
 ```bash
 # Generate keypair
 openssl genpkey -algorithm Ed25519 -out key.pem