Update README.md

README.md

@@ -1,5 +1,6 @@
 # errors
 ![workflow check](https://github.com/seacraft/errors/actions/workflows/check.yml/badge.svg)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/seacraft/errors)](https://pkg.go.dev/github.com/seacraft/errors?tab=doc)
 [![Go Report Card](https://goreportcard.com/badge/github.com/seacraft/errors?)](https://goreportcard.com/report/github.com/seacraft/errors)
 [![golangci badge](https://github.com/golangci/golangci-web/blob/master/src/assets/images/badge_a_plus_flat.svg)](https://golangci.com/r/github.com/seacraft/errors)
 [![release](https://img.shields.io/github/release-pre/seacraft/errors.svg)](https://github.com/seacraft/errors/releases)
@@ -8,4 +9,4 @@
 
 Based on the `github.com/pkg/errors` package, it adds support for `error code` and is fully compatible with `github.com/pkg/errors`.
 
-The performance is basically the same as `github.com/pkg/errors`.
+The performance is basically the same as `github.com/pkg/errors`.