Update README

Author: TinyuZhao

README.md

@@ -35,7 +35,7 @@ Additional optional include files:
 
 * **[Buy Basic](https://shop.m5stack.com/products/esp32-basic-core-iot-development-kit-v2-7)**
 
-*[Comparison of M5Stack controllers](https://docs.m5stack.com/en/products_selector)*
+*[Comparison of M5Stack controllers](https://docs.m5stack.com/en/products_selector/m5core_compare)*
 
 ### M-BUS
 <img src="docs/M-BUS.jpg" width="300" />

docs/getting_started_cn.md

@@ -12,7 +12,7 @@
 
 * **如果想要购买 Basic 的话，[点击这里](https://item.taobao.com/item.htm?spm=a1z10.5-c-s.w4002-22404213529.11.6b2349d8feN5U0&id=610634829528)**
 
-*我们有几款不同配置的主控 M5Cores，这是他们之间的[对比](https://docs.m5stack.com/zh_CN/products_selector).*
+*我们有几款不同配置的主控 M5Cores，这是他们之间的[对比](https://docs.m5stack.com/zh_CN/products_selector/m5core_compare).*
 
 
 ### M-BUS