Parametrized more hardcoded values.

modules/cloud-vpn/variables.tf

@@ -14,7 +14,7 @@ variable "region" {
 }
 
 variable "vpn_external_ip" {
-  description = "The name of the external IP address of the VPN Gateway."
+  description = "External IP address for the VPN gateway. If not provided, a new IP will be allocated."
   type        = string
   nullable    = true
   default     = null