docs: update README shields (#2558)

* docs: add badges to README.md

* docs: new discord badge

* docs: update discord badge

* docs: update discord badge

* docs: remove shield

README.md

@@ -1,4 +1,4 @@
-# Go Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Go.Dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/go-micro.dev/v4?tab=doc) [![Community](https://img.shields.io/:project-toolkit-orange.svg)](https://github.com/go-micro)
+# Go Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Go.Dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/go-micro.dev/v4?tab=doc) [![Go Report Card](https://goreportcard.com/badge/github.com/go-micro/go-micro)](https://goreportcard.com/report/github.com/go-micro/go-micro) [![](https://dcbadge.vercel.app/api/server/qV3HvnEJfB?style=flat-square&theme=default-inverted)](https://discord.gg/qV3HvnEJfB)
 
 
 Go Micro is a framework for distributed systems development.