Remove broken link in README

Rik Huijzer · web-flow · commit aea2c3b8adf0 · 2022-09-16T14:33:10.000+02:00
diff --git a/README.md b/README.md
@@ -5,7 +5,6 @@
 
 **Docs:**
 [![](https://img.shields.io/badge/docs-master-blue.svg)](https://juliadiff.org/Diffractor.jl/dev)
-[![](https://img.shields.io/badge/docs-stable-blue.svg)](https://juliadiff.org/Diffractor.jl/stable)
 
 # General Overview
 
