chore: update badges in README (#459)

* chore: update badges in README
* update main branch

Author: gammazero

README.md

@@ -2,8 +2,9 @@
 
 [![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io)
 [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
-[![Coverage Status](https://codecov.io/gh/ipfs/go-graphsync/branch/master/graph/badge.svg)](https://codecov.io/gh/ipfs/go-graphsync/branch/master)
-[![Build Status](https://circleci.com/gh/ipfs/go-bitswap.svg?style=svg)](https://circleci.com/gh/ipfs/go-graphsync)
+[![Coverage Status](https://codecov.io/gh/ipfs/go-graphsync/branch/main/graph/badge.svg)](https://codecov.io/gh/ipfs/go-graphsync/branch/main)
+[![Build Status](https://img.shields.io/github/actions/workflow/status/ipfs/go-graphsync/go-test.yml?branch=main)](https://github.com/ipfs/go-graphsync/actions)
+[![GoDoc](https://pkg.go.dev/badge/github.com/ipfs/go-graphsync)](https://pkg.go.dev/github.com/ipfs/go-graphsync)
 
 > An implementation of the [graphsync protocol](https://github.com/ipld/specs/blob/master/block-layer/graphsync/graphsync.md) in go!