azurerm_kubernetes_cluster - update docs for host_encryption_enabled's required feature (#31018)

Author: ms-henglu

website/docs/r/kubernetes_cluster.html.markdown

@@ -385,7 +385,7 @@ A `default_node_pool` block supports the following:
 
 * `host_encryption_enabled` - (Optional) Should the nodes in the Default Node Pool have host encryption enabled? `temporary_name_for_rotation` must be specified when changing this property.
 
--> **Note:** This requires that the  Feature `Microsoft.ContainerService/EnableEncryptionAtHost` is enabled and the Resource Provider is registered.
+-> **Note:** This requires that the Feature `Microsoft.Compute/EncryptionAtHost` is enabled and the Resource Provider is registered.
 
 * `node_public_ip_enabled` - (Optional) Should nodes in this Node Pool have a Public IP Address? `temporary_name_for_rotation` must be specified when changing this property.