docs: add casbin and keycloak in README. (#5034)

README.md

@@ -108,7 +108,7 @@ A/B testing, canary release, blue-green deployment, limit rate, defense against
 
 - **Security**
 
-  - Authentications: [key-auth](docs/en/latest/plugins/key-auth.md), [JWT](docs/en/latest/plugins/jwt-auth.md), [basic-auth](docs/en/latest/plugins/basic-auth.md), [wolf-rbac](docs/en/latest/plugins/wolf-rbac.md)
+  - Authentications: [key-auth](docs/en/latest/plugins/key-auth.md), [JWT](docs/en/latest/plugins/jwt-auth.md), [basic-auth](docs/en/latest/plugins/basic-auth.md), [wolf-rbac](docs/en/latest/plugins/wolf-rbac.md), [casbin](docs/en/latest/plugins/authz-casbin.md), [keycloak](docs/en/latest/plugins/authz-keycloak.md)
   - [IP Whitelist/Blacklist](docs/en/latest/plugins/ip-restriction.md)
   - [Referer Whitelist/Blacklist](docs/en/latest/plugins/referer-restriction.md)
   - [IdP](docs/en/latest/plugins/openid-connect.md): Support external authentication services, such as Auth0, okta, etc., users can use this to connect to OAuth 2.0 and other authentication methods.

docs/zh/latest/README.md

@@ -109,7 +109,7 @@ A/B 测试、金丝雀发布(灰度发布)、蓝绿部署、限流限速、抵
 
 - **安全防护**
 
-  - 多种身份认证方式: [key-auth](plugins/key-auth.md), [JWT](plugins/jwt-auth.md), [basic-auth](plugins/basic-auth.md), [wolf-rbac](plugins/wolf-rbac.md)。
+  - 多种身份认证方式: [key-auth](plugins/key-auth.md), [JWT](plugins/jwt-auth.md), [basic-auth](plugins/basic-auth.md), [wolf-rbac](plugins/wolf-rbac.md), casbin, [keycloak](plugins/authz-keycloak.md)。
   - [IP 黑白名单](plugins/ip-restriction.md)
   - [Referer 黑白名单](plugins/referer-restriction.md)
   - [IdP 支持](plugins/openid-connect.md): 支持外部的身份认证服务，比如 Auth0，Okta，Authing 等，用户可以借此来对接 Oauth2.0 等认证方式。