From 6202e4efb7db4be9665975c25888169eadef9dd5 Mon Sep 17 00:00:00 2001
From: Nango <guannanzhao2023@u.northwestern.edu>
Date: Fri, 10 Jul 2020 22:48:59 -0500
Subject: [PATCH] fix topic format

---
 src/ch12-01-accepting-command-line-arguments.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ch12-01-accepting-command-line-arguments.md b/src/ch12-01-accepting-command-line-arguments.md
index 5481f9e..405a379 100644
--- a/src/ch12-01-accepting-command-line-arguments.md
+++ b/src/ch12-01-accepting-command-line-arguments.md
@@ -1,4 +1,4 @@
-## 接受命令行参数
+### 接受命令行参数
 
 > [ch12-01-accepting-command-line-arguments.md](https://github.com/rust-lang/book/blob/master/src/ch12-01-accepting-command-line-arguments.md)
 > <br>