From 3bf48ff0bcff9b3ba9b5c164a7a4070f21df82a2 Mon Sep 17 00:00:00 2001
From: sunface <cto@188.com>
Date: Thu, 24 Feb 2022 16:42:24 +0800
Subject: [PATCH] update toc

---
 contents/SUMMARY.md    | 2 +-
 contents/about-book.md | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/contents/SUMMARY.md b/contents/SUMMARY.md
index 3795da90..9aa9322f 100644
--- a/contents/SUMMARY.md
+++ b/contents/SUMMARY.md
@@ -3,7 +3,7 @@
 [进入Rust编程世界](into-rust.md)
 [AWS为何这么喜欢Rust?](usecases/aws-rust.md)
 [避免从入门到放弃](sth-you-should-not-do.md)
-<!-- [关于本书](about-book.md) -->
+[关于本书](about-book.md)
 
 [快速查询入口](index-list.md)
 
diff --git a/contents/about-book.md b/contents/about-book.md
index 091e8eb7..329c76b2 100644
--- a/contents/about-book.md
+++ b/contents/about-book.md
@@ -4,7 +4,7 @@
   - 官方： [https://course.rs](https://course.rs)
   - 国内镜像： [https://book.rust.team](https://book.rust.team)
   - 知乎： [支持章节内目录跳转，很好用!](https://www.zhihu.com/column/c_1452781034895446017)
-- Rust版本： Rust edition 2021
+- 配套练习题: [https://exercise.rs](https://github.com/sunface/rust-exercise)
 - QQ交流群：1009730433
 
 ### 教程简介