docs: clarify 5M footprint refers to installer size, not RAM

Issue #1249 confused the ~5M package-size claim with runtime memory.
The WebKit render process memory is owned by the wrapped site, not Pake.

Author: tw93

README.md

@@ -19,7 +19,7 @@
 
 ## Features
 
-- 🎐 **Lightweight**: Nearly 20 times smaller than Electron packages, typically around 5M
+- 🎐 **Lightweight**: Installer is nearly 20 times smaller than Electron packages, typically around 5M on disk
 - 🚀 **Fast**: Built with Rust Tauri, much faster than traditional JS frameworks with lower memory usage
 - ⚡ **Easy to use**: One-command packaging via CLI or online building, no complex configuration needed
 - 📦 **Feature-rich**: Supports shortcuts, immersive windows, drag & drop, style customization, ad removal

README_CN.md

@@ -19,7 +19,7 @@
 
 ## 特征
 
-- 🎐 **体积小巧**：相比 Electron 应用小近 20 倍，通常只有 5M 左右
+- 🎐 **体积小巧**：安装包相比 Electron 应用小近 20 倍，通常只有 5M 左右
 - 🚀 **性能优异**：基于 Rust Tauri，比传统 JS 框架更快，内存占用更少
 - ⚡ **使用简单**：命令行一键打包，或在线构建，无需复杂配置
 - 📦 **功能丰富**：支持快捷键透传、沉浸式窗口、拖拽、样式定制、去广告