Drop appveyor badge

README.md

@@ -4,8 +4,8 @@
     <a href="https://buildkite.com/julialang/fourierflows-dot-jl">
         <img alt="Buildkite CPU+GPU build status" src="https://img.shields.io/buildkite/4d921fc17b95341ea5477fb62df0e6d9364b61b154e050a123/master?logo=buildkite&label=Buildkite%20CPU%2BGPU">
     </a>
-    <a href="https://ci.appveyor.com/project/navidcy/fourierflows-jl">
-        <img alt="Build Status for Windows" src="https://img.shields.io/appveyor/ci/navidcy/fourierflows-jl/master?label=Window&logo=appveyor&logoColor=white">
+    <a href="https://github.com/FourierFlows/FourierFlows.jl/actions/workflows/CI.yml">
+        <img alt="Build Status for Windows" src="https://github.com/FourierFlows/FourierFlows.jl/actions/workflows/CI.yml/badge.svg">
     </a>
     <a href="https://FourierFlows.github.io/FourierFlowsDocumentation/stable">
         <img alt="stable docs" src="https://img.shields.io/badge/documentation-stable%20release-blue">