README: add OSS-Fuzz badge, update Go reference badge (#50)

README.md

@@ -1,7 +1,8 @@
 # QPACK
 
-[![Godoc Reference](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](https://godoc.org/github.com/quic-go/qpack)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/quic-go/qpack)](https://pkg.go.dev/github.com/quic-go/qpack)
 [![Code Coverage](https://img.shields.io/codecov/c/github/quic-go/qpack/master.svg?style=flat-square)](https://codecov.io/gh/quic-go/qpack)
+[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/quic-go.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:quic-go)
 
 This is a minimal QPACK ([RFC 9204](https://datatracker.ietf.org/doc/html/rfc9204)) implementation in Go. It is minimal in the sense that it doesn't use the dynamic table at all, but just the static table and (Huffman encoded) string literals. Wherever possible, it reuses code from the [HPACK implementation in the Go standard library](https://github.com/golang/net/tree/master/http2/hpack).