docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1,6 +1,6 @@
 # <img src="https://www.pyopensci.org/images/logo.png" width=100 /> pyOpenSci scientific Python Packaging Guide
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-43-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-44-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/pyopensci/python-package-guide?color=purple&display_name=tag&style=plastic)
@@ -130,6 +130,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
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       <td align="center" valign="top" width="14.28%"><a href="https://github.com/h-vetinari"><img src="https://avatars.githubusercontent.com/u/33685575?v=4?s=100" width="100px;" alt="h-vetinari"/><br /><sub><b>h-vetinari</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=h-vetinari" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Ah-vetinari" title="Reviewed Pull Requests">👀</a> <a href="#tutorial-h-vetinari" title="Tutorials">✅</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://xmnlab.github.io"><img src="https://avatars.githubusercontent.com/u/5209757?v=4?s=100" width="100px;" alt="Ivan Ogasawara"/><br /><sub><b>Ivan Ogasawara</b></sub></a><br /><a href="https://github.com/pyOpenSci/python-package-guide/commits?author=xmnlab" title="Code">💻</a> <a href="https://github.com/pyOpenSci/python-package-guide/pulls?q=is%3Apr+reviewed-by%3Axmnlab" title="Reviewed Pull Requests">👀</a> <a href="#tutorial-xmnlab" title="Tutorials">✅</a></td>
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