Update README.md

Author: cclauss

README.md

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 # python-magic
 [![PyPI version](https://badge.fury.io/py/python-magic.svg)](https://badge.fury.io/py/python-magic)
-[![Tests](https://github.com/ahupp/python-magic/actions/workflows/ci.yml/badge.svg)](https://github.com/ahupp/python-magic/actions/workflows/ci.yml)
+[![ci](https://github.com/ahupp/python-magic/actions/workflows/ci.yml/badge.svg)](https://github.com/ahupp/python-magic/actions/workflows/ci.yml)
 [![Join the chat at https://gitter.im/ahupp/python-magic](https://badges.gitter.im/ahupp/python-magic.svg)](https://gitter.im/ahupp/python-magic?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 python-magic is a Python interface to the libmagic file type