docs: format README headers for improved alignment and consistency

Author: sean2077

README-zh.md

@@ -1,6 +1,8 @@
-# winguake 
+<div align="center">
 
-中文 | [English](README_en.md)
+# winguake
+
+**中文 | [English](README_en.md)**
 
 <p align="center">
     <a href="https://www.autohotkey.com/"><img
@@ -22,6 +24,8 @@
             src="https://img.shields.io/github/license/sean2077/winguake" alt="License" /></a>
 </p>
 
+</div>
+
 ---
 
 winguake 是一款让你可以在 Windows 下通过热键 显示/隐藏/启动（几乎）任意应用窗口，以及在多应用或同应用的多窗口之间切换的轻量化工具（本质是 [AutoHotkey](https://github.com/AutoHotkey/AutoHotkey) v2 脚本）。

README.md

@@ -1,6 +1,8 @@
+<div align="center">
+
 # winguake
 
-[中文](README-zh.md) | English
+**[中文](README-zh.md) | English**
 
 <p align="center">
     <a href="https://www.autohotkey.com/"><img
@@ -22,6 +24,8 @@
             src="https://img.shields.io/github/license/sean2077/winguake" alt="License" /></a>
 </p>
 
+</div>
+
 ---
 
 winguake is a lightweight tool for Windows that allows you to show, hide, or launch (almost) any application window using hotkeys, as well as switch between multiple windows of different applications or multiple windows of the same application. It is essentially an [AutoHotkey](https://github.com/AutoHotkey/AutoHotkey) v2 script.