FIX: build shield

Author: JulienPalard

README.md

@@ -4,7 +4,7 @@
  ![Monthly downloads](https://img.shields.io/pypi/dm/pipe)
  ![Supported Python Version](https://img.shields.io/pypi/pyversions/pipe.svg)
 ](https://pypi.org/project/pipe)
-[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/JulienPalard/pipe/tests.yml?branch=main)](https://github.com/JulienPalard/pipe/actions)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/JulienPalard/pipe/tests.yml?branch=main)](https://github.com/JulienPalard/pipe/actions)
 
 Module enabling a sh like infix syntax (using pipes).