Update README.md

Added monterey support

README.md

@@ -2,6 +2,8 @@
 
 **Status: Maintained**
 
+Highest supported OS: Macos 12.4
+
 Master doesnt have much, check the releases :D
 
 Even if it shows a release which was released a long time ago, please check the same as i release pre releases which dont show up.
@@ -11,7 +13,8 @@ Even if it shows a release which was released a long time ago, please check the
 [![OpenCore](https://img.shields.io/badge/OpenCore-0.6.9-blue.svg)](https://github.com/acidanthera/OpenCorePkg)
 [![macOS-Previous](https://img.shields.io/badge/macOS-10.14.6-brightgreen.svg)](https://github.com/EETagent/T480-OpenCore-Hackintosh/issues/11)
 [![macOS-Stable](https://img.shields.io/badge/macOS-10.15.7-brightgreen.svg)](https://www.apple.com/macos/catalina/)
-[![macOS-Unstable](https://img.shields.io/badge/macOS-11.6-brightgreen.svg)](https://www.apple.com/macos/big-sur)
+[![macOS-Unstable](https://img.shields.io/badge/macOS-11.6-blue.svg)](https://www.apple.com/macos/big-sur)
+[![macOS-Unstable](https://img.shields.io/badge/macOS-12.4-purple.svg)](https://www.apple.com/macos/monterey)
 
 **DISCLAIMER:**
 Read the entire README and Dortania guides before you start. I am not responsible for any damage.