Merge pull request #401 from pynapple-org/gviejo-patch-2

Update README.md

README.md

@@ -2,7 +2,7 @@
 
 [![image](https://img.shields.io/pypi/v/pynapple.svg)](https://pypi.python.org/pypi/pynapple)
 [![pynapple CI](https://github.com/pynapple-org/pynapple/actions/workflows/main.yml/badge.svg)](https://github.com/pynapple-org/pynapple/actions/workflows/main.yml)
-[![Coverage Status](https://coveralls.io/repos/github/pynapple-org/pynapple/badge.svg?branch=main)](https://coveralls.io/github/pynapple-org/pynapple?branch=main)
+[![codecov](https://codecov.io/gh/pynapple-org/pynapple/branch/main/graph/badge.svg?token=VN9BDBOEGZ)](https://codecov.io/gh/pynapple-org/pynapple)
 [![GitHub issues](https://img.shields.io/github/issues/pynapple-org/pynapple)](https://github.com/pynapple-org/pynapple/issues)
 ![GitHub contributors](https://img.shields.io/github/contributors/pynapple-org/pynapple)
 ![Twitter Follow](https://img.shields.io/twitter/follow/thepynapple?style=social)