chore: link to the latest v3 document URL on README.md (#684)

Author: oinume

README.md

@@ -8,7 +8,7 @@
   <p align="center">
     <a href="https://circleci.com/gh/algolia/algoliasearch-client-go"><img src="https://circleci.com/gh/algolia/algoliasearch-client-go.svg?style=shield" alt="CircleCI" /></a>
     <a href="https://github.com/algolia/algoliasearch-client-go/releases"><img src="https://img.shields.io/github/tag/algolia/algoliasearch-client-go.svg" alt="Github Releases"></img></a>
-    <a href="https://godoc.org/github.com/algolia/algoliasearch-client-go"><img src="https://godoc.org/github.com/algolia/algoliasearch-client-go?status.svg" alt="GoDoc"></img></a>
+    <a href="https://pkg.go.dev/github.com/algolia/algoliasearch-client-go/v3"><img src="https://pkg.go.dev/badge/github.com/algolia/algoliasearch-client-go/v3" alt="GoDoc"></img></a>
     <a href="https://goreportcard.com/report/github.com/algolia/algoliasearch-client-go"><img src="https://goreportcard.com/badge/github.com/algolia/algoliasearch-client-go" alt="Go Report Card"></img></a>
     <a href="https://github.com/algolia/algoliasearch-client-go/blob/master/LICENSE"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License"></img></a>
     <img src="https://img.shields.io/badge/Go-%3E=1.11-green.svg" alt="Supported version"></img></a>