[AutoPR servicefabricmanagedclusters] update readme#5971

openapi-sdkautomation[bot] wants to merge 1 commit intomainAzureSDKAutomation/azure-resource-manager-schemas:mainfrom

sdkAuto/18223/servicefabricmanagedclustersAzureSDKAutomation/azure-resource-manager-schemas:sdkAuto/18223/servicefabricmanagedclustersCopy head branch name to clipboard