Update README.md Main Branch test status

Thanks @jayqi . Resolves #307

README.md

@@ -1,6 +1,8 @@
 # pkgnet <img src="man/figures/logo.png" align="right" alt="" width="120" />
 
-[![CRAN\_Status\_Badge](https://www.r-pkg.org/badges/version-last-release/pkgnet)](https://cran.r-project.org/package=pkgnet) [![CRAN\_Download\_Badge](https://cranlogs.r-pkg.org/badges/grand-total/pkgnet)](https://cran.r-project.org/package=pkgnet) [![GitHub Actions Build Status](https://github.com/uptake/pkgnet/workflows/Tests/badge.svg?branch=main)](https://github.com/uptake/pkgnet/actions?query=workflow%3ATests+branch%3Amain)
+[![CRAN\_Status\_Badge](https://www.r-pkg.org/badges/version-last-release/pkgnet)](https://cran.r-project.org/package=pkgnet) 
+[![CRAN\_Download\_Badge](https://cranlogs.r-pkg.org/badges/grand-total/pkgnet)](https://cran.r-project.org/package=pkgnet) 
+[![GitHub Actions Build Status](https://github.com/uptake/pkgnet/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/uptake/pkgnet/actions/workflows/ci.yml?query=branch%3Amain)
 [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/github/uptake/pkgnet?branch=main&svg=true)](https://ci.appveyor.com/project/jameslamb/pkgnet)
 [![codecov](https://codecov.io/gh/uptake/pkgnet/branch/main/graph/badge.svg)](https://app.codecov.io/gh/uptake/pkgnet) 
 [![Lifecycle badge](https://lifecycle.r-lib.org/articles/figures/lifecycle-stable.svg)](https://lifecycle.r-lib.org/articles/stages.html)