message: update build status badge for FreeBSD
diff: @@ -16,7 +16,7 @@ Current Build Status
  - Linux: [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/intel/pcm/Linux%20make)](https://github.com/intel/pcm/actions/workflows/linux_make.yml?query=branch%3Amaster)
  - Windows: [![Build status](https://ci.appveyor.com/api/projects/status/github/intel/pcm?branch=master&svg=true)](https://ci.appveyor.com/project/opcm/pcm)
  -- FreeBSD: [![Build Status](https://api.cirrus-ci.com/github/opcm/pcm.svg)](https://cirrus-ci.com/github/opcm/pcm)
  +- FreeBSD: [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/intel/pcm/FreeBSD%20build)](https://github.com/intel/pcm/actions/workflows/freebsd_build.yml?query=branch%3Amaster)
  - OS X: [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/intel/pcm/Mac%20OS%20X%20build)](https://github.com/intel/pcm/actions/workflows/macosx_build.yml?query=branch%3Amaster)
  - Docker container: [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/intel/pcm/Docker%20Build)](doc/DOCKER_README.md)
  