Update README.md

fixed prerequisites (DT version and AG version needs to be 1.222+)

Author: floriangeigl

README.md

@@ -8,8 +8,8 @@ Dashboard             |
 
 ## <a name="permissions"></a> Prerequisites and supported versions
 
-* Dynatrace version 1.220+
-* ActiveGate version 1.220+ running within the Kubernetes cluster. To have an ActiveGate in your Kubernetes cluster, deploy Dynatrace using [Dynatrace Operator](https://www.dynatrace.com/support/help/shortlink/full-stack-dto-k8) (recommended) or deploy an [ActiveGate as a StatefulSet](https://www.dynatrace.com/support/help/shortlink/connect-kubernetes-clusters).
+* Dynatrace version 1.222+
+* ActiveGate version 1.222+ running within the Kubernetes cluster. To have an ActiveGate in your Kubernetes cluster, deploy Dynatrace using [Dynatrace Operator](https://www.dynatrace.com/support/help/shortlink/full-stack-dto-k8) (recommended) or deploy an [ActiveGate as a StatefulSet](https://www.dynatrace.com/support/help/shortlink/connect-kubernetes-clusters).
 * OpenShift 4 and OpenShift 3 (self-managed)