Merge pull request #1489 from gruntwork-io/fix-azure-aks-example

Fix terraform-azure-aks-example unit test failure.

examples/azure/terraform-azure-aks-example/main.tf

@@ -58,7 +58,7 @@ resource "azurerm_kubernetes_cluster" "k8s" {
     client_id     = var.client_id
     client_secret = var.client_secret
   }
-  automatic_channel_upgrade = "stable"
+  automatic_upgrade_channel = "stable"
   tags = {
     Environment = "Development"
   }