From 974e8c59b046efac4dc926bc18249ebc0128e590 Mon Sep 17 00:00:00 2001
From: stanzhai <jasondan325@163.com>
Date: Sat, 14 Jun 2014 22:33:34 +0800
Subject: [PATCH] correct 2.21 code mistakes

---
 source/chapter2/21_Protocols.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter2/21_Protocols.md b/source/chapter2/21_Protocols.md
index 4b5f854f..06f06a04 100755
--- a/source/chapter2/21_Protocols.md
+++ b/source/chapter2/21_Protocols.md
@@ -340,7 +340,7 @@ class DiceGameTracker: DiceGameDelegate {
 `DiceGameTracker`的运行情况，如下所示：
 
 ```swift
-“let tracker = DiceGameTracker()
+let tracker = DiceGameTracker()
 let game = SnakesAndLadders()
 game.delegate = tracker
 game.play()