diff --git a/README.md b/README.md
index 9e0dcc1..fa359ed 100644
--- a/README.md
+++ b/README.md
@@ -93,7 +93,6 @@ $ git checkout master
 $ git rebase upstream/master
 $ git push -f origin master
 ```
-
 ## 原出處及參考資料
 1. [Docker —— 从入门到实践](https://github.com/yeasy/docker_practice/)
 2. [《The Swift Programming Language­》正體中文版](https://github.com/tommy60703/the-swift-programming-language-in-traditional-chinese/)