plugins/new-file-template: improve documentation

modules/plugins/utility/new-file-template/new-file-template.nix

@@ -10,7 +10,11 @@ in {
     enable = mkOption {
       type = bool;
       default = false;
-      description = "new-file-template.nvim: Automatically insert a template on new files in neovim. To add custom templates add a directory containing `lua/templates/*.lua` to `vim.additionalRuntimePaths`.";
+      description = ''
+        new-file-template.nvim: Automatically insert a template on new files in neovim.
+        To add custom templates add a directory containing `lua/templates/*.lua` to `vim.additionalRuntimePaths`.
+        More documentation on the templates available at https://github.com/otavioschwanck/new-file-template.nvim?tab=readme-ov-file#creating-new-templates
+      '';
     };
 
     setupOpts = mkPluginSetupOption "nvim-file-template.nvim" {
@@ -36,9 +40,7 @@ in {
         type = attrsOf (listOf str);
         default = {};
         description = "Disable specific regexp for the default templates. Example: { ruby = [ \".*\" ]; }";
-        example = {
+        example = "{ ruby = [\".*\"]; }";
-          ruby = [".*"];
-        };
       };
 
       suffixAsFiletype = mkOption {