Add lots of missing option types

nixos/modules/misc/locate.nix

@@ -17,8 +17,8 @@ in
     services.locate = {
 
       enable = mkOption {
+        type = types.bool;
         default = false;
-        example = true;
         description = ''
           If enabled, NixOS will periodically update the database of
           files used by the <command>locate</command> command.
@@ -26,11 +26,12 @@ in
       };
 
       period = mkOption {
+        type = types.str;
         default = "15 02 * * *";
         description = ''
           This option defines (in the format used by cron) when the
           locate database is updated.
-          The default is to update at 02:15 (at night) every day.
+          The default is to update at 02:15 at night every day.
         '';
       };