Switch to utm_source/medium/campaign tracking for GA4

README.md

@@ -20,7 +20,7 @@ language:
 
 > 在 Cursor、Windsurf、Cline、Continue 等 AI 编程工具中使用 624+ 模型
 
-[Crazyrouter](https://crazyrouter.com/?ref=huggingface) 兼容 OpenAI API，可以作为所有主流 AI 编程工具的后端。一个 Key 搞定所有编程助手。
+[Crazyrouter](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community) 兼容 OpenAI API，可以作为所有主流 AI 编程工具的后端。一个 Key 搞定所有编程助手。
 
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@@ -295,7 +295,7 @@ echo json_decode($response)->choices[0]->message->content;
 
 ## 链接
 
-- 🌐 [Crazyrouter](https://crazyrouter.com/?ref=huggingface) — 获取 API Key
+- 🌐 [Crazyrouter](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community) — 获取 API Key
 - 🤖 [在线 Demo](https://huggingface.co/spaces/xujfcn/Crazyrouter-Demo)
 - 📖 [快速入门](https://huggingface.co/xujfcn/Crazyrouter-Getting-Started)
 - 🔗 [LangChain 集成](https://huggingface.co/xujfcn/Crazyrouter-LangChain-Guide)