update README

Author: TinyuZhao

README.md

@@ -6,8 +6,8 @@ English | [中文](README_cn.md)
 
 **For the Detailed documentation of M5Core2, Please [Click here](https://docs.m5stack.com/en/core/core2)**
 
-**In order to buy  M5Core2, Please [Click here](https://m5stack.aliexpress.com/store/group/M5Core/3226069_514774359.html?spm=a2g0o.store_pc_allProduct.0.0.2ec5329bwncFjf)**
-  
+**In order to buy  M5Core2, Please [Click here](https://shop.m5stack.com/collections/m5-controllers/products/m5stack-core2-esp32-iot-development-kit)**
+
 ## Description
 
 **M5Core2** is the second generation core device in the M5Stack development kit series, which further enhances the functions of the original generation of cores. 

README_cn.md

@@ -6,7 +6,7 @@
 
 * **如果查看 M5Core2 的详细介绍文档，[点击这里](https://docs.m5stack.com/zh_CN/core/core2)**
 
-* **如果想要购买 M5Core2 的话，[点击这里](https://item.taobao.com/item.htm?spm=a1z10.5-c-s.w4002-22404213529.17.6e3e49d8MKGBmL&id=625561056791)**
+* **如果想要购买 M5Core2 的话，[点击这里](https://item.taobao.com/item.htm?spm=a1z10.5-c-s.w4002-22404213529.31.5ada1d91KUL15v&id=625561056791)**
 
 ## 描述