nixos: services: vikunja: add fail2ban note

modules/nixos/services/transmission/default.nix

@@ -90,5 +90,7 @@ in
       allowedTCPPorts = [ cfg.peerPort ];
       allowedUDPPorts = [ cfg.peerPort ];
     };
+
+    # NOTE: unfortunately transmission does not log connection failures for fail2ban
   };
 }

modules/nixos/services/vikunja/default.nix

@@ -99,5 +99,7 @@ in
         config.services.vikunja.settings.files.basepath
       ];
     };
+
+    # NOTE: unfortunately vikunja does not log connection failures for fail2ban
   };
 }