Update README.md

Author: freekmurze

README.md

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-[<img src="https://github-ads.s3.eu-central-1.amazonaws.com/support-ukraine.svg?t=1" />](https://supportukrainenow.org)
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 # A lightweight solution for running PHP code concurrently
 
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/spatie/fork.svg?style=flat-square)](https://packagist.org/packages/spatie/fork)