feat: improve README badges

README.md

@@ -4,10 +4,9 @@
 [![Crates.io](https://img.shields.io/crates/v/casbin.svg)](https://crates.io/crates/casbin)
 [![crates.io](https://img.shields.io/crates/d/casbin)](https://crates.io/crates/casbin)
 [![Docs](https://docs.rs/casbin/badge.svg)](https://docs.rs/casbin)
-[![CI](https://github.com/casbin/casbin-rs/workflows/CI/badge.svg)](https://github.com/casbin/casbin-rs/actions)
+[![GitHub Actions](https://github.com/casbin/casbin-rs/workflows/CI/badge.svg)](https://github.com/casbin/casbin-rs/actions)
 [![Codecov](https://codecov.io/gh/casbin/casbin-rs/branch/master/graph/badge.svg)](https://codecov.io/gh/casbin/casbin-rs)
 [![Discord](https://img.shields.io/discord/1022748306096537660?logo=discord&label=discord&color=5865F2)](https://discord.gg/S5UjpzGZjN)
-[![forum](https://img.shields.io/badge/forum-join-%23cde201)](https://forum.casbin.com/)
 
 💖 [**Looking for an open-source identity and access management solution like Okta, Auth0, Keycloak ? Learn more about: Casdoor**](https://casdoor.org/)