Terraform format

terraform/firewall.tf

@@ -1,7 +1,7 @@
 resource "linode_firewall_device" "site-firewall-vms" {
   count       = length(var.app_servers)
   firewall_id = linode_firewall.site-firewall.id
-    entity_id = "${element(linode_instance.site-vm.*.id, count.index)}"
+  entity_id   = element(linode_instance.site-vm.*.id, count.index)
 }
 
 resource "linode_firewall" "site-firewall" {

terraform/variables.tf

@@ -30,10 +30,10 @@ variable "ssh_key" {
 
 variable "app_servers" {
   description = "Details describing the vm instances for the app"
-    type = list
+  type        = list(any)
 }
 
 variable "bastion_server" {
   description = "Details describing the bastion instance."
-    type = map
+  type        = map(any)
 }