tweak warning about experimental software
[![Build Status](https://dev.azure.com/azure/azure-service-operator/_apis/build/status/Azure.azure-service-operator?branchName=master)](https://dev.azure.com/azure/azure-service-operator/_build/latest?definitionId=36&branchName=master)
-> This project is experimental. The API is expected to change (while adhering to semantic versioning). It is not recommended for production environments.
+> This project is experimental. The API is expected to change (while adhering to semantic versioning). Alpha and Beta resources are generally not recommended for production environments.
The Azure Service Operator helps you provision Azure resources and connect your applications to them from within Kubernetes.
