From e115582c0c5e5006e2bd24dcd20efe6eb444ceca Mon Sep 17 00:00:00 2001
From: Joe Chen <geometryolife@gmail.com>
Date: Wed, 14 Jun 2023 23:35:24 +0800
Subject: [PATCH] fix 3.7.1 heading

---
 src/chapter_3/chapter_3_7_1.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/chapter_3/chapter_3_7_1.md b/src/chapter_3/chapter_3_7_1.md
index 8651778..cb68584 100644
--- a/src/chapter_3/chapter_3_7_1.md
+++ b/src/chapter_3/chapter_3_7_1.md
@@ -91,7 +91,7 @@ fn main() {
 }
 ```
 
-### 3.2 String类型的本质
+### 2）String类型的本质
 
 Rust标准库中，String类型的定义如下：