Update README.md

README.md

@@ -55,7 +55,7 @@ docker compose up
 - [Nginx Proxy Manager](examples/nginx-proxy-manager) - Nginx Proxy Manager is an easy way to accomplish reverse proxying hosts with SSL termination.
 - [Caddy](examples/caddy) - The Caddy web server is an extensible, cross-platform, open-source web server written in Go. Caddy obtains and renews TLS certificates for your sites automatically.
 
-### Identity Providers / Single Sign On
+### Identity Providers / Single Sign On (SSO) / 2FA
 - [Authelia](examples/authelia) - Authelia is an open-source authentication and authorization server providing two-factor authentication and single sign-on (SSO) for your applications via a web portal. It acts as a companion for reverse proxies by allowing, denying, or redirecting requests. Recommended to combine with [Traefik](examples/traefik).
 
 ### Virtual Private Network (VPN)