Fix: all contributors bot badge has incorrect number (and is duplicated) (#393)

Fixing a readme issue with the all contribs badge

Author: lwasser

README.md

@@ -1,6 +1,5 @@
 # pyopensci.github.io
-[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors)
-[![All Contributors](https://img.shields.io/badge/all_contributors-3-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-25-orange.svg?style=flat-square)](#contributors)
 [![pages-build-deployment](https://github.com/pyOpenSci/pyopensci.github.io/actions/workflows/pages/pages-build-deployment/badge.svg)](https://github.com/pyOpenSci/pyopensci.github.io/actions/workflows/pages/pages-build-deployment)
 
 This repo contains the source code for the [pyOpenSci.org](https://pyopensci.org) website. Contributions are welcome. Thank you [**pyOpenSci contributors**](#contributors-✨)!!