chore: update the minimum version of Node.js required

Author: tiny-craft

docs/guide/installation.md

@@ -70,7 +70,7 @@ In the latest version of [Webkit2Gtk](https://archlinux.org/packages/extra/x86_6
 ### Prerequisites
 
 * Go (latest version)
-* Node.js >= 16
+* Node.js >= 20
 * NPM >= 9
 
 ### Install wails

docs/zh/guide/installation.md

@@ -71,7 +71,7 @@ chmod u+x tiny_rdm_{version}_linux_amd64.AppImage
 ### 运行环境要求
 
 * Go（最新版本）
-* Node.js >= 16
+* Node.js >= 20
 * NPM >= 9
 
 ### 安装wails