Add PDFMathTranslate to translation tools list

Added PDFMathTranslate (pdf2zh), an open-source PDF document translation tool, to both English and Chinese README files. Included relevant links to advanced options and service configuration documentation.

README.md

@@ -229,6 +229,10 @@ A modern, free web-based translation app powered by the DeepLX API. Features inc
 3. Open Zotero settings and navigate to the Services section under Translation
 4. Configure the translation service as DeepLX (API) and set the endpoint to `https://dplx.xi-xu.me/translate` after clicking the config button
 
+### [PDFMathTranslate（pdf2zh）](https://github.com/Byaidu/PDFMathTranslate)（Open-source PDF document translation tool）
+
+Refer to [Advanced Options](https://github.com/Byaidu/PDFMathTranslate?tab=readme-ov-file#advanced-options) and [Translate with different services](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#translate-with-different-services).
+
 ### [Immersive Translate](https://immersivetranslate.com/) (Closed-source browser extension)
 
 1. [Install Immersive Translate](https://immersivetranslate.com/download/)

README.zh.md

@@ -229,6 +229,10 @@ except Exception as e:
 3. 打开 Zotero 设置并导航到翻译中的服务部分
 4. 将翻译服务配置为 DeepLX（API），并点击配置按钮后将接口配置为 `https://dplx.xi-xu.me/translate`
 
+### [PDFMathTranslate（pdf2zh）](https://github.com/Byaidu/PDFMathTranslate)（开源 PDF 文档翻译工具）
+
+参考[高级选项](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/README_zh-CN.md#%E9%AB%98%E7%BA%A7%E9%80%89%E9%A1%B9)和[使用不同的服务进行翻译](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#translate-with-different-services)。
+
 ### [沉浸式翻译](https://immersivetranslate.com/zh-Hans/)（闭源浏览器扩展）
 
 1. [安装沉浸式翻译](https://immersivetranslate.com/zh-Hans/download/)