Update README to note suspension of pre-deployed instance

Added a notice in both English and Chinese README files indicating that the pre-deployed instance is temporarily suspended due to excessive requests, and advised users to self-deploy.

README.md

@@ -168,7 +168,9 @@ graph TB
 
 ## 🌐 Online Service
 
-**Pre-deployed Instance**: `https://dplx.xi-xu.me`
+> **⚠️ Important Notice**: The pre-deployed instance has been temporarily suspended due to excessive requests. Please [self-deploy](#-self-deployment) to continue using the service.
+
+~~**Pre-deployed Instance**: `https://dplx.xi-xu.me`~~ (Temporarily Suspended)
 
 ## 📦 Quick Start
 

README.zh.md

@@ -168,7 +168,9 @@ graph TB
 
 ## 🌐 在线服务
 
-**预部署实例**：`https://dplx.xi-xu.me`
+> **⚠️ 重要提示**：预部署实例因请求过多已暂时停止服务。请[自行部署](#-自部署)以继续使用。
+
+~~**预部署实例**：`https://dplx.xi-xu.me`~~ （暂时停止）
 
 ## 📦 快速开始