Update mltooling badges to header

Author: lukasmasuch

config/header.md

@@ -13,8 +13,8 @@
     <a href="#Contents" title="Project Count"><img src="https://img.shields.io/badge/projects-{project_count}-blue.svg?color=5ac4bf"></a>
     <a href="#Contribution" title="Contributions are welcome"><img src="https://img.shields.io/badge/contributions-welcome-green.svg"></a>
     <a href="https://github.com/ml-tooling/best-of-python-dev/releases" title="Best-of Updates"><img src="https://img.shields.io/github/release-date/ml-tooling/best-of-python-dev?color=green&label=updated"></a>
-    <a href="https://bestoflists.substack.com/subscribe" title="Subscribe for updates"><img src="http://bit.ly/2Md9rxM"></a>
-    <a href="https://twitter.com/best_of_lists" title="Best-of on Twitter"><img src="https://img.shields.io/twitter/follow/best_of_lists.svg?style=social&label=Follow"></a>
+    <a href="https://mltooling.substack.com/subscribe" title="Subscribe to newsletter"><img src="http://bit.ly/2Md9rxM"></a>
+    <a href="https://twitter.com/mltooling" title="Follow on Twitter"><img src="https://img.shields.io/twitter/follow/mltooling.svg?style=social&label=Follow"></a>
 </p>
 
 This curated list contains {project_count} awesome open-source projects with a total of {stars_count} stars grouped into {category_count} categories. All projects are ranked by a project-quality score, which is calculated based on various metrics automatically collected from GitHub and different package managers. If you like to add or update projects, feel free to open an [issue](https://github.com/ml-tooling/best-of-python-dev/issues/new/choose), submit a [pull request](https://github.com/ml-tooling/best-of-python-dev/pulls), or directly edit the [projects.yaml](https://github.com/ml-tooling/best-of-python-dev/edit/main/projects.yaml). Contributions are very welcome!