nixos-generate-config: rewrite stateVersion comment again

        # accidentally delete configuration.nix.

        # system.copySystemConfiguration = true;

        # This value determines the NixOS release from which the default

        # settings for stateful data, like file locations and database versions

        # on your system were taken. It's perfectly fine and recommended to leave

        # this value at the release version of the first install of this system.

        # Before changing this value read the documentation for this option

        # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).

        # This option defines the first version of NixOS you have installed on this particular machine,

        # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.

        #

        # Most users should NEVER change this value after the initial install, for any reason,

        # even if you've upgraded your system to a new NixOS release.

        #

        # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,

        # so changing it will NOT upgrade your system.

        #

        # This value being lower than the current NixOS release does NOT mean your system is

        # out of date, out of support, or vulnerable.

        #

        # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,

        # and migrated your data accordingly.

        #

        # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .

        system.stateVersion = "${config.system.nixos.release}"; # Did you read the comment?

      }