docs: update editor/extension names in README template [skip ci]

Visual Studio Code is referred to as "VS Code" rather than "VSCode" in
its documentation.

Volar is now named as "Vue (Official)" in the marketplace.

Author: haoqunjiang

utils/generateReadme.ts

@@ -29,7 +29,7 @@ This template should help get you started developing with Vue 3 in Vite.
 
 ## Recommended IDE Setup
 
-[VSCode](https://code.visualstudio.com/) + [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
+[VS Code](https://code.visualstudio.com/) + [Vue (Official)](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
 ${needsTypeScript ? sfcTypeSupportDoc : ''}
 ## Customize configuration