docs(zh-CN): add missing pt-BR/id/vi links to language switcher

Author: kevintseng

README.zh-CN.md

@@ -14,7 +14,7 @@
 [![Stars](https://img.shields.io/github/stars/kevintseng/gstack-industrial?style=social)](https://github.com/kevintseng/gstack-industrial/stargazers)
 [![Issues](https://img.shields.io/github/issues/kevintseng/gstack-industrial)](https://github.com/kevintseng/gstack-industrial/issues)
 
-[**English**](README.md) | [**繁體中文**](README.zh-TW.md) | [**简体中文**](README.zh-CN.md) | [**日本語**](README.ja.md) | [**한국어**](README.ko.md)
+[**English**](README.md) | [**繁體中文**](README.zh-TW.md) | [**简体中文**](README.zh-CN.md) | [**日本語**](README.ja.md) | [**한국어**](README.ko.md) | [**Português**](README.pt-BR.md) | [**Bahasa**](README.id.md) | [**Tiếng Việt**](README.vi.md)
 
 </div>