[ReleasePR @azure/arm-features] add management group registration description to ARM#11640

openapi-sdkautomation[bot] wants to merge 1 commit intoAzure:masterAzure/azure-sdk-for-js:masterfrom

AzureSDKAutomation:sdkAutomation/@azure_arm-featuresAzureSDKAutomation/azure-sdk-for-js:sdkAutomation/@azure_arm-featuresCopy head branch name to clipboard