Update contributor link and Godoc badge for client

README.md

 Miniflux 2
 ==========
-[![GoDoc](https://godoc.org/miniflux.app?status.svg)](https://godoc.org/miniflux.app)
 
 Miniflux is a minimalist and opinionated feed reader:
 
@@ -51,5 +50,5 @@ Dark theme when using keyboard navigation:
 Credits
 -------
 
-- Authors: Frédéric Guillot - [List of contributors](https://github.com/miniflux/miniflux/graphs/contributors)
+- Authors: Frédéric Guillot - [List of contributors](https://github.com/miniflux/v2/graphs/contributors)
 - Distributed under Apache 2.0 License

client/README.md

 Miniflux API Client
 ===================
 
+[![PkgGoDev](https://pkg.go.dev/badge/miniflux.app/client)](https://pkg.go.dev/miniflux.app/client)
+
 Client library for Miniflux REST API.
 
 Installation