chore: fix badge in readme

Author: runemalm

README.md

@@ -13,8 +13,8 @@
   <a href="https://pypi.org/project/codius/">
     <img src="https://img.shields.io/pypi/v/codius" alt="PyPI version">
   </a>
-  <a href="https://github.com/runemalm/codius-cli/actions/workflows/master.yml">
-    <img src="https://github.com/runemalm/codius-cli/actions/workflows/master.yml/badge.svg" alt="Build status">
+  <a href="https://github.com/runemalm/codius-cli/actions/workflows/release.yml">
+    <img src="https://github.com/runemalm/codius-cli/actions/workflows/release.yml/badge.svg" alt="Build status">
   </a>
   <img src="https://img.shields.io/pypi/l/codius" alt="License">
   <a href="https://pepy.tech/project/codius">