deployment-script readme.txt broken link

https://github.com/Azure/azure-docs-json-samples/tree/master/deployment-script references a non-existing page: https://docs.microsoft.com/azure/azure-resource-manager/deployment-script-in-template (I couldn't find the proper link it should reference, in fact I couldn't find any mention of this feature except in some non-MS blog about Ignite 2019).