adjust github actions badge

Author: smeghead

README.md

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 A CLI tool that parses the PHP source directory and outputs PlantUML class diagram scripts.
 
-[![Testing](https://github.com/smeghead/php-class-diagram/actions/workflows/php.yml/badge.svg)] [![Latest Stable Version](http://poser.pugx.org/smeghead/php-class-diagram/v)](https://packagist.org/packages/smeghead/php-class-diagram) [![Total Downloads](http://poser.pugx.org/smeghead/php-class-diagram/downloads)](https://packagist.org/packages/smeghead/php-class-diagram) [![Latest Unstable Version](http://poser.pugx.org/smeghead/php-class-diagram/v/unstable)](https://packagist.org/packages/smeghead/php-class-diagram) [![License](http://poser.pugx.org/smeghead/php-class-diagram/license)](https://packagist.org/packages/smeghead/php-class-diagram) [![PHP Version Require](http://poser.pugx.org/smeghead/php-class-diagram/require/php)](https://packagist.org/packages/smeghead/php-class-diagram)
+![Testing](https://github.com/smeghead/php-class-diagram/actions/workflows/php.yml/badge.svg) [![Latest Stable Version](http://poser.pugx.org/smeghead/php-class-diagram/v)](https://packagist.org/packages/smeghead/php-class-diagram) [![Total Downloads](http://poser.pugx.org/smeghead/php-class-diagram/downloads)](https://packagist.org/packages/smeghead/php-class-diagram) [![Latest Unstable Version](http://poser.pugx.org/smeghead/php-class-diagram/v/unstable)](https://packagist.org/packages/smeghead/php-class-diagram) [![License](http://poser.pugx.org/smeghead/php-class-diagram/license)](https://packagist.org/packages/smeghead/php-class-diagram) [![PHP Version Require](http://poser.pugx.org/smeghead/php-class-diagram/require/php)](https://packagist.org/packages/smeghead/php-class-diagram)
 
 # Features