Update CHANGELOG.MD

CHANGELOG.MD

@@ -15,6 +15,8 @@ All notable changes to this project will be documented in this file.
   - New V3 Install Script
 - **Uptime Kuma LXC**
   - New V3 Install Script 
+- **Vaultwarden LXC**
+  - New V3 Install Script 
 
 ## 2022-04-17