docs: update build badge

Author: idleberg

README.md

@@ -1,5 +1,6 @@
 [![GNU General Public License](https://img.shields.io/badge/license-GPL%20v2-blue.svg?style=flat-square)](http://www.gnu.org/licenses/gpl-2.0.html)
-[![Build and Test](https://github.com/NSIS-Dev/nsl-assembler/workflows/Build%20and%20Test/badge.svg)](https://github.com/NSIS-Dev/nsl-assembler/actions)
+![Build and Test](https://img.shields.io/github/actions/workflow/status/NSIS-Dev/nsL-Assembler/build.yml?branch=main&style=flat-square)
+
 
 # nsL Assembler