fix doc translation

Author: shps951023

README.md

@@ -5,6 +5,11 @@
 </p>
 </div>
 
+---
+
+<div align="center">
+<p><strong><a href="README.md">English</a> | <a href="README.zh-CN.md">简体中文</a> | <a href="README.zh-Hant.md">繁體中文</a></strong></p>
+</div>
 
 ---
 

README.zh-CN.md

@@ -7,6 +7,12 @@
 
 ---
 
+<div align="center">
+<p><strong><a href="README.md">English</a> | <a href="README.zh-CN.md">简体中文</a> | <a href="README.zh-Hant.md">繁體中文</a></strong></p>
+</div>
+
+---
+
 <div align="center">
  您的 <a href="https://github.com/mini-software/MiniWord">Star</a> 和 <a href="https://miniexcel.github.io">赞助</a> 可以让 MiniWord 走更远
 </div>

README.zh-Hant.md

@@ -6,6 +6,12 @@
 </div>
 
 
+---
+
+<div align="center">
+<p><strong><a href="README.md">English</a> | <a href="README.zh-CN.md">简体中文</a> | <a href="README.zh-Hant.md">繁體中文</a></strong></p>
+</div>
+
 ---
 
 <div align="center">