nixos/xmonad: don't reference nonexistent package sets in docs

+1 -1
+1 -1
nixos/modules/services/x11/window-managers/xmonad.nix
··· 46 46 haskellPackages = mkOption { 47 47 default = pkgs.haskellPackages; 48 48 defaultText = literalExpression "pkgs.haskellPackages"; 49 - example = literalExpression "pkgs.haskell.packages.ghc784"; 49 + example = literalExpression "pkgs.haskell.packages.ghc8107"; 50 50 type = types.attrs; 51 51 description = '' 52 52 haskellPackages used to build Xmonad and other packages.