tlsdated: add missing default value for extraOptions

tg(x) de787adb de5a233a

Changed files
+1
nixos
modules
services
networking
+1
nixos/modules/services/networking/tlsdated.nix
···
extraOptions = mkOption {
type = types.string;
+
default = "";
description = ''
Additional command line arguments to pass to tlsdated.
'';