utility/undotree: added description to enable

Co-authored-by: raf <raf@notashelf.dev>

modules/plugins/utility/undotree/config.nix

@@ -1,7 +1,12 @@
-{ ... }:
 {
   vim.lazy.plugins.undotree = {
     package = "undotree";
-    cmd = [ "UndotreeToggle" ];
+    cmd = [
+      "UndotreeToggle"
+      "UndotreeShow"
+      "UndotreeHide"
+      "UndotreePersistUndo"
+      "UndotreeFocus"
+    ];
   };
 }

modules/plugins/utility/undotree/undotree.nix

@@ -4,6 +4,6 @@ let
 in
 {
   options.vim.undotree = {
-    enable = mkEnableOption "undotree";
+    enable = mkEnableOption "undo history visualizer for Vim [undotree]";
   };
 }