Update CI badge link in README.md (#322)

Author: tmigot

README.md

@@ -5,8 +5,7 @@
 [![](https://img.shields.io/badge/docs-stable-3f51b5.svg)](https://jso.dev/JSOSolvers.jl/stable)
 [![](https://img.shields.io/badge/docs-latest-3f51b5.svg)](https://jso.dev/JSOSolvers.jl/latest)
 [![codecov](https://codecov.io/gh/JuliaSmoothOptimizers/JSOSolvers.jl/branch/main/graph/badge.svg?token=eyiGsilbZx)](https://codecov.io/gh/JuliaSmoothOptimizers/JSOSolvers.jl)
-
-![CI](https://github.com/JuliaSmoothOptimizers/JSOSolvers.jl/workflows/CI/badge.svg?branch=main)
+[![CI](https://github.com/JuliaSmoothOptimizers/JSOSolvers.jl/actions/workflows/ci.yml/badge.svg)](https://github.com/JuliaSmoothOptimizers/JSOSolvers.jl/actions/workflows/ci.yml)
 [![Cirrus CI - Base Branch Build Status](https://img.shields.io/cirrus/github/JuliaSmoothOptimizers/JSOSolvers.jl?logo=Cirrus%20CI)](https://cirrus-ci.com/github/JuliaSmoothOptimizers/JSOSolvers.jl)
 
 This package provides optimization solvers curated by the JuliaSmoothOptimizers