added pkg.go.dev link to read me file

Author: MitulShah1

README.md

@@ -4,6 +4,7 @@
 [![build](https://github.com/MitulShah1/golang-rest-api-template//actions/workflows/go.yml/badge.svg?branch=main)](https://github.com/MitulShah1/golang-rest-api-template/actions/workflows/go.yml)
 [![codecov](https://codecov.io/github/MitulShah1/golang-rest-api-template/graph/badge.svg?token=88JSRODXSS)](https://codecov.io/github/MitulShah1/golang-rest-api-template)
 [![Go Report Card](https://goreportcard.com/badge/github.com/MitulShah1/golang-rest-api-template)](https://goreportcard.com/report/github.com/MitulShah1/golang-rest-api-template)
+[![pkg.go.dev](https://pkg.go.dev/badge/github.com/MitulShah1/golang-rest-api-template)](https://pkg.go.dev/github.com/MitulShah1/golang-rest-api-template)
 
 ## 🚀 Template Repository