Update README.md

Author: lgrateau

README.md

@@ -26,7 +26,7 @@ docker pull icr.io/cpopen/odm-k8s/odm
         https://github.com/ODMDev/odm-ondocker/tree/master/standalone/dockerhub
 
 -	**Supported Docker versions**:  
-	[latest release](https://docs.docker.com/engine/release-notes/#201021) (down to Engine 20.10)
+	[latest release](https://docs.docker.com/engine/release-notes/#201021) (down to Engine 27)
 
 -	**Rule Designer development environment for ODM developers**:  
 	Available from the [Eclipse marketplace](https://marketplace.eclipse.org/content/ibm-operational-decision-manager-developers-v95x-rule-designer)