201-vm-winrm-windows - Failed to download all specified files. Exiting. Error Message: The remote server returned an error: (404) Not Found.".

https://github.com/Azure/azure-quickstart-templates/tree/master/201-vm-winrm-windows

### Issue Details

Error when using in ARM template
Artifact fails with the below error every time:

The resource operation completed with terminal provisioning state 'Failed'. VM has reported a failure when processing extension 'customScriptArtifact-183362431'. Error message: "Failed to download all specified files. Exiting. Error Message: The remote server returned an error: (404) Not Found.".

### Repro steps
1. http://www.visualstudiogeeks.com/blog/DevOps/Configure-winrm-with-ARM-template-in-AzureDevTestLab-VM-deployment-using-PowerShell-artifact

Start with the 201-vm-winrm-windows template and review its ARM template and customScriptArtifact file references. Reproduce the deployment using the linked steps and identify which specified download returns 404; done means the artifact completes without the reported download failure.

Written by the indexing model from the issue text.