Update README.md

Author: Zabuzard

README.md

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 ![Java](https://img.shields.io/badge/Java-19-ff696c)
 [![license](https://img.shields.io/github/license/Together-Java/ModernJava)](https://github.com/Together-Java/ModernJava/blob/master/LICENSE)
-![GitHub release (latest by date)](https://img.shields.io/github/v/release/Together-Java/ModernJava?label=release)
 
 Book teaching how to write modern and effective Java. It is maintained by the community, anyone can contribute.