Fix CI badge to use correct workflow name and branch

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: fain182

README.md

@@ -1,5 +1,5 @@
 # 📐 PHPArkitect 
-[![Latest Stable Version](https://poser.pugx.org/phparkitect/phparkitect/v/stable)](https://packagist.org/packages/phparkitect/phparkitect)  ![PHPArkitect](https://github.com/phparkitect/arkitect/workflows/Arkitect/badge.svg?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/phparkitect/phparkitect/v/stable)](https://packagist.org/packages/phparkitect/phparkitect)  ![PHPArkitect](https://github.com/phparkitect/arkitect/workflows/Test/badge.svg?branch=main)
 [![Packagist](https://img.shields.io/packagist/dt/phparkitect/phparkitect.svg)](https://packagist.org/packages/phparkitect/phparkitect)
 [![codecov](https://codecov.io/gh/phparkitect/arkitect/branch/main/graph/badge.svg)](https://codecov.io/gh/phparkitect/arkitect)