From 5baacd7daa0ba644062ca8309dc8a03f0f48ec02 Mon Sep 17 00:00:00 2001
From: LiHuashen <854410664@qq.com>
Date: Sun, 2 Dec 2018 21:47:50 +0800
Subject: [PATCH] Update api_reference.md

---
 docs/en/api_reference.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/en/api_reference.md b/docs/en/api_reference.md
index ac7149ab..b955e8e1 100644
--- a/docs/en/api_reference.md
+++ b/docs/en/api_reference.md
@@ -4,5 +4,5 @@
 
 ## [LCD](en/api_reference/api_lcd)
 ## Peripherals
-### * [GPIO](en/api_reference/peripherals/api_gpio)
+### 1. [GPIO](en/api_reference/peripherals/api_gpio)
 ## [Speaker](en/api_reference/api_speaker)