simplify hetzner api key handling on freun-dev

hosts/freun-dev/secrets.nix

@@ -17,7 +17,6 @@
           "vaultwarden"
           "donetick"
           "dnote"
-          "octodns"
           "mealie"
           "mosquitto/homie"
           "mosquitto/telegraf"

modules/services/octodns.nix

@@ -179,7 +179,7 @@ let
       };
       hetzner = {
         class = "octodns_hetzner.HetznerProvider";
-        token = "env/HETZNER_TOKEN";
+        token = "env/HETZNER_API_KEY";
       };
     };
 
@@ -214,7 +214,7 @@ in
         Type = "oneshot";
         ExecStart = "${octodns}/bin/octodns-sync --config-file ${configFile} --doit";
         DynamicUser = true;
-        EnvironmentFile = secrets.octodns.path;
+        EnvironmentFile = secrets.hetzner.path;
         RemainAfterExit = true;
       };
       wantedBy = lib.optionals config.services.nginx.enable [ "nginx.service" ];