nixpkgs module: update config example

firefox.enableGeckoMediaPlayer does not exist anymore.

Changed files
+1 -1
nixos
modules
+1 -1
nixos/modules/misc/nixpkgs.nix
···
default = {};
example = literalExample
''
-
{ firefox.enableGeckoMediaPlayer = true; }
'';
type = configType;
description = ''
···
default = {};
example = literalExample
''
+
{ allowBroken = true; allowUnfree = true; }
'';
type = configType;
description = ''