Fix CI badge

Author: Seldaek

README.md

@@ -3,8 +3,7 @@ composer/class-map-generator
 
 Utilities to generate class maps and scan PHP code.
 
-[![Continuous Integration](https://github.com/composer/class-map-generator/workflows/Continuous%20Integration/badge.svg?branch=main)](https://github.com/composer/class-map-generator/actions)
-
+[![Continuous Integration](https://github.com/composer/class-map-generator/actions/workflows/continuous-integration.yml/badge.svg?branch=main)](https://github.com/composer/class-map-generator/actions)
 
 Installation
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