From d3932e8f0bcaf38195a379bdcdc2e45a2ce4ef82 Mon Sep 17 00:00:00 2001
From: Nango <guannanzhao2023@u.northwestern.edu>
Date: Fri, 10 Jul 2020 22:50:25 -0500
Subject: [PATCH] fix caption format

---
 src/ch12-02-reading-a-file.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ch12-02-reading-a-file.md b/src/ch12-02-reading-a-file.md
index aa8d810..22950a6 100644
--- a/src/ch12-02-reading-a-file.md
+++ b/src/ch12-02-reading-a-file.md
@@ -1,4 +1,4 @@
-## 读取文件
+### 读取文件
 
 > [ch12-02-reading-a-file.md](https://github.com/rust-lang/book/blob/master/src/ch12-02-reading-a-file.md)
 > <br>