From 00c4bb1ec5ee7ca35deee4cac29b59881156d211 Mon Sep 17 00:00:00 2001
From: Lenny Peng <lenny.peng@senscomm.com>
Date: Thu, 10 Nov 2022 11:27:12 +0800
Subject: [PATCH] updated.

---
 d04-Router-and-Switch-Security.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/d04-Router-and-Switch-Security.md b/d04-Router-and-Switch-Security.md
index 48bfb37..71c2fce 100644
--- a/d04-Router-and-Switch-Security.md
+++ b/d04-Router-and-Switch-Security.md
@@ -1,4 +1,4 @@
-# 第4天 路由器和交换机安全
+# 第 4 天 路由器和交换机安全
 
 __Router and Switch Security__