fix regex

vault/main.tf

@@ -36,9 +36,9 @@ variable "vault_cli_version" {
   type        = string
   description = "The version of Vault to install."
   default     = "latest"
-  # validate the version is in the format 0.0.0 or latest
+  # validate the version is in the format x.y.z or latest
   validation {
-    condition     = can(regex("^(latest|[0-9]+\\.[0-9]+\\.[0-9]+)$", var.vault_version))
+    condition     = can(regex("^(latest|[0-9]+\\.[0-9]+\\.[0-9]+)$", var.vault_cli_version))
     error_message = "Vault version must be in the format 0.0.0 or latest"
   }
 }