update example config to working version

roles/authelia/templates/Caddyfile.j2

@@ -1,3 +1,19 @@
 auth.{{ authelia_domain }} {
     reverse_proxy authelia:{{ authelia_port }}
+}
+
+# Reusable snippet for Authelia Forward Auth
+(authelia_auth) {
+    forward_auth http://authelia:9091 { # Replace with your Authelia IP/Port or container name
+        uri /api/verify?rd=https://frantecrt.duckdns.org # Replace with your public Authelia URL
+        copy_headers Remote-User Remote-Groups Remote-Email Remote-Name
+    }
+}
+
+test.frantecrt.duckdns.org {
+    # Import the auth configuration block
+    import authelia_auth
+
+    # Route the traffic to your backend application if authenticated
+    reverse_proxy frantecrt.duckdns.org:8080
 }