update docs

Author: keyboard3

official/docs/CHANGELOG.md

@@ -17,7 +17,7 @@ sidebar_position: 6
 - [iOS 沉浸式浏览器](https://immersivetranslate.com/)
 
 
-## 1.16.5 Preview (2025-04-22)
+## 1.16.5 Release (2025-04-22)
 
 - 新增：AI 术语库管理（仅支持 AI 翻译服务）
 - 新增：PC 端支持划词翻译功能（非油猴）

official/i18n/en-US/docusaurus-plugin-content-docs/current/CHANGELOG.md

@@ -16,7 +16,7 @@ The **Preview version** is published more frequently and includes some experimen
 - [Android Browser](https://immersivetranslate.com/)
 - [iOS Browser](https://immersivetranslate.com/)
 
-## 1.16.5 Preview (2025-04-22)
+## 1.16.5 Release (2025-04-22)
 
 - Added: AI glossary management (only supports AI translation services)
 - Added: PC version supports text selection translation feature (non-userscript)

official/i18n/zh-TW/docusaurus-plugin-content-docs/current/CHANGELOG.md

@@ -16,7 +16,7 @@ sidebar_position: 6
 - [Android 沉浸式瀏覽器](https://immersivetranslate.com/)
 - [iOS 沉浸式瀏覽器](https://immersivetranslate.com/)
 
-## 1.16.5 Preview (2025-04-22)
+## 1.16.5 Release (2025-04-22)
 
 - 新增：AI 術語庫管理（僅支援 AI 翻譯服務）
 - 新增：PC 端支援劃詞翻譯功能（非油猴）