Update main.tf

Proposing update of repository as per suggestion of https://github.com/Azure/terraform/issues/101. Otherwise, the code as is cannot be initialized. Thank you!

quickstart/201-machine-learning-moderately-secure/main.tf

@@ -8,7 +8,7 @@ terraform {
     }
 
     azureml = {
-      source = "registry.terraform.io/Telemaco019/azureml"
+      source = "registry.terraform.io/orobix/azureml"
     }
   }
 }