[AutoPR signalr/resource-manager] Add azure-sdk-for-node to signalr/resource-manager/readme.md#2414

AutorestCI wants to merge 1 commit intomasterAzure/azure-sdk-for-java:masterfrom

restapi_auto_daschult/signalrAzure/azure-sdk-for-java:restapi_auto_daschult/signalrCopy head branch name to clipboard