Update README.md

Author: sorenduan

README.md

@@ -11,7 +11,7 @@
 [![GitHub stars](https://img.shields.io/github/stars/sorenduan/awesome-java-books.svg?label=Stars)](https://github.com/sorenduan/awesome-java-books/stargazers)
 [![GitHub watchers](https://img.shields.io/github/watchers/sorenduan/awesome-java-books.svg?label=Watchers)](https://github.com/sorenduan/awesome-java-books/watchers)
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-
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 <h3>目录：</h3>