diff --git a/docs/en/base/btc_base.md b/docs/en/base/btc_base.md
index cdc5fa35..2b70490a 100644
--- a/docs/en/base/btc_base.md
+++ b/docs/en/base/btc_base.md
@@ -45,13 +45,13 @@
 
 #  Related Link
 
-- **[DHT12 datasheet](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/hat/DHT12_en.pdf)**
+- [DHT12 datasheet](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/hat/DHT12_en.pdf)
 
 ## Example
 
 ### Arduino IDE
 
-*To get the code `BTC.ino`, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Base/BTC/Arduino).*
+- To get the code `BTC.ino`, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Base/BTC/Arduino).
 
 ```arduino
 #include <M5Stack.h>