Update README.md

Author: ibuler

profile/README.md

@@ -13,6 +13,7 @@
 
 | Project                                                | Status                                                                                                                                                                 | Description                                                                                             |
 |--------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|
+| [Core](https://github.com/jumpserver/jumpserver)       | <a href="https://github.com/jumpserver/jumpserver/releases"><img alt="JumpServer" src="https://img.shields.io/github/release/jumpserver/jumpserver.svg" /></a>         | JumpServer core api server            
 | [Lina](https://github.com/jumpserver/lina)             | <a href="https://github.com/jumpserver/lina/releases"><img alt="Lina release" src="https://img.shields.io/github/release/jumpserver/lina.svg" /></a>                   | JumpServer Web UI                                                                                       |
 | [Luna](https://github.com/jumpserver/luna)             | <a href="https://github.com/jumpserver/luna/releases"><img alt="Luna release" src="https://img.shields.io/github/release/jumpserver/luna.svg" /></a>                   | JumpServer Web Terminal                                                                                 |
 | [KoKo](https://github.com/jumpserver/koko)             | <a href="https://github.com/jumpserver/koko/releases"><img alt="Koko release" src="https://img.shields.io/github/release/jumpserver/koko.svg" /></a>                   | JumpServer Character Protocol Connector                                                                 |