readme: fix badges

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

README.md

@@ -1,6 +1,7 @@
 [![GitHub release](https://img.shields.io/github/release/docker/metadata-action.svg?style=flat-square)](https://github.com/docker/metadata-action/releases/latest)
 [![GitHub marketplace](https://img.shields.io/badge/marketplace-docker--metadata--action-blue?logo=github&style=flat-square)](https://github.com/marketplace/actions/docker-metadata-action)
-[![Test workflow](https://img.shields.io/github/workflow/status/docker/metadata-action/test?label=test&logo=github&style=flat-square)](https://github.com/docker/metadata-action/actions?workflow=test)
+[![CI workflow](https://img.shields.io/github/actions/workflow/status/docker/metadata-action/ci.yml?branch=master&label=ci&logo=github&style=flat-square)](https://github.com/docker/metadata-action/actions?workflow=ci)
+[![Test workflow](https://img.shields.io/github/actions/workflow/status/docker/metadata-action/test.yml?branch=master&label=test&logo=github&style=flat-square)](https://github.com/docker/metadata-action/actions?workflow=test)
 [![Codecov](https://img.shields.io/codecov/c/github/docker/metadata-action?logo=codecov&style=flat-square)](https://codecov.io/gh/docker/metadata-action)
 
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