fix(template): eliminate the error that occurs when enabling eslint-plugin-markdown (#13942)

Author: liby

packages/create-vite/template-react-ts/README.md

@@ -14,12 +14,15 @@ If you are developing a production application, we recommend updating the config
 - Configure the top-level `parserOptions` property like this:
 
 ```js
-   parserOptions: {
+export default {
+  // other rules...
+  parserOptions: {
     ecmaVersion: 'latest',
     sourceType: 'module',
     project: ['./tsconfig.json', './tsconfig.node.json'],
     tsconfigRootDir: __dirname,
-   },
+  },
+}
 ```
 
 - Replace `plugin:@typescript-eslint/recommended` to `plugin:@typescript-eslint/recommended-type-checked` or `plugin:@typescript-eslint/strict-type-checked`