swayidle: update event format

Author: LorenzBischof

modules/home/wayland/default.nix

@@ -97,12 +97,7 @@ in
   };
   services.swayidle = {
     enable = true;
-    events = [
-      {
-        event = "before-sleep";
-        command = "${pkgs.swaylock}/bin/swaylock -f";
-      }
-    ];
+    events.before-sleep = "${pkgs.swaylock}/bin/swaylock -f";
     timeouts = [
       {
         timeout = 300;