From 661325b4e666f1746e84b514e8b2f5506210ed95 Mon Sep 17 00:00:00 2001
From: Nango <guannanzhao2023@u.northwestern.edu>
Date: Fri, 10 Jul 2020 23:36:35 -0500
Subject: [PATCH] Update ch12-03-improving-error-handling-and-modularity.md

---
 src/ch12-03-improving-error-handling-and-modularity.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ch12-03-improving-error-handling-and-modularity.md b/src/ch12-03-improving-error-handling-and-modularity.md
index 7b9f37a..a1309db 100644
--- a/src/ch12-03-improving-error-handling-and-modularity.md
+++ b/src/ch12-03-improving-error-handling-and-modularity.md
@@ -1,4 +1,4 @@
-### 重构改进模块性和错误处理
+## 重构改进模块性和错误处理
 
 > [ch12-03-improving-error-handling-and-modularity.md](https://github.com/rust-lang/book/blob/master/src/ch12-03-improving-error-handling-and-modularity.md)
 > <br>