diff --git a/README.md b/README.md
index e50cddb..240f51d 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@
 
 笔者感谢以下读者指出本书中出现的错误：
 
-[Recolic Keghart](https://www.gitbook.com/@recolic), [sinomiko](https://www.gitbook.com/@sinomiko), [Wang Zhenhua](https://www.gitbook.com/@jackwish), [asm warrior](https://www.gitbook.com/@asmwarrior), [garicc](https://www.gitbook.com/@ihpy), [Wenhan Jiang](https://www.gitbook.com/@jiangwenhan), [liang xiao](https://www.gitbook.com/@liangx8), [slivermeteor](https://github.com/slivermeteor)
+[Recolic Keghart](https://www.gitbook.com/@recolic), [sinomiko](https://www.gitbook.com/@sinomiko), [Wang Zhenhua](https://www.gitbook.com/@jackwish), [asm warrior](https://www.gitbook.com/@asmwarrior), [garicc](https://www.gitbook.com/@ihpy), [Wenhan Jiang](https://www.gitbook.com/@jiangwenhan), [liang xiao](https://www.gitbook.com/@liangx8), [slivermeteor](https://github.com/slivermeteor), [inkedawn](https://github.com/inkedawn)
 
 ## 赞助
 
diff --git a/book/02-usability.md b/book/02-usability.md
index 5c4a873..92d1ec3 100644
--- a/book/02-usability.md
+++ b/book/02-usability.md
@@ -737,7 +737,7 @@ C++ 17 中将变长参数这种特性进一步带给了表达式，考虑下面
 #include <iostream>
 template<typename ... T>
 auto sum(T ... t) {
-    return (t + ...)
+    return (t + ...);
 }
 int main() {
     std::cout << sum(1, 2, 3, 4, 5, 6, 7, 8, 9, 10) << std::endl;