hyprland: emphasize usage of the NixOS module

modules/services/window-managers/hyprland.nix

@@ -40,7 +40,21 @@ in {
  ];
 
  options.wayland.windowManager.hyprland = {
- enable = lib.mkEnableOption "Hyprland wayland compositor";
+ enable = lib.mkOption {
+ type = lib.types.bool;
+ default = false;
+ description = ''
+ Whether to enable configuration for Hyprland, a tiling Wayland
+ compositor that doesn't sacrifice on its looks.
+
+ ::: {.note}
+ This module configures Hyprland and adds it to your user's {env}`PATH`,
+ but does not make certain system-level changes. NixOS users should
+ enable the NixOS module with {option}`programs.hyprland.enable`, which
+ makes system-level changes such as adding a desktop session entry.
+ :::
+ '';
+ };
 
  package = lib.mkPackageOption pkgs "hyprland" { };