lib: make use of visible variable in doRename

The `visible` variable was not hooked up previously. It is used to
determine whether the renamed option should be shown in the
documentation.

lib/modules.nix

@@ -664,6 +664,7 @@ rec {
     in
       { config, options, ... }:
       { options = setAttrByPath from (mkOption {
+          inherit visible;
           description = "Alias of <option>${showOption to}</option>.";
           apply = x: use (toOf config);
         });