Fix CI badge

Author: lkdvos

Readme.md

@@ -3,15 +3,16 @@
 `AlgorithmsInterface.jl` is a Julia package to provide a common interface to run iterative tasks.
 **Algorithm** here refers to an iterative sequence of commands, that are run until a certain stopping criterion is met.
 
-[![docs][docs-dev-img]][docs-dev-url] ![CI][ci-url] [![codecov][codecov-img]][codecov-url]
+[![docs][docs-dev-img]][docs-dev-url] [![CI][ci-img]][ci-url] [![codecov][codecov-img]][codecov-url]
 
 [docs-dev-img]: https://img.shields.io/badge/docs-dev-blue.svg
 [docs-dev-url]: https://JuliaManifolds.github.io/AlgorithmsInterface.jl/dev/
 
 [codecov-img]: https://codecov.io/gh/JuliaManifolds/AlgorithmsInterface.jl/graph/badge.svg?token=1OBDY03SUP
 [codecov-url]: https://codecov.io/gh/JuliaManifolds/AlgorithmsInterface.jl
 
-[ci-url]: https://github.com/JuliaManifolds/AlgorithmsInterface.jl/workflows/ci/badge.svg
+[ci-img]: https://github.com/JuliaManifolds/AlgorithmsInterface.jl/actions/workflows/ci.yml/badge.svg
+[ci-url]: https://github.com/JuliaManifolds/AlgorithmsInterface.jl/actions/workflows/ci.yml
 
 # Statement of need