Update README.md

Fixed the workflow status badge to point to the correct test file.

README.md

@@ -1,6 +1,6 @@
 # cast
 
-[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/spf13/cast/ci.yaml?branch=master&style=flat-square)](https://github.com/spf13/cast/actions/workflows/ci.yaml)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/spf13/cast/test.yaml?branch=master&style=flat-square)](https://github.com/spf13/cast/actions/workflows/test.yaml)
 [![PkgGoDev](https://pkg.go.dev/badge/mod/github.com/spf13/cast)](https://pkg.go.dev/mod/github.com/spf13/cast)
 ![Go Version](https://img.shields.io/badge/go%20version-%3E=1.16-61CFDD.svg?style=flat-square)
 [![Go Report Card](https://goreportcard.com/badge/github.com/spf13/cast?style=flat-square)](https://goreportcard.com/report/github.com/spf13/cast)