content: use OVH/OpenStack providers in Terraform example

Replace AWS provider with:
- openstack provider for VM (openstack_compute_instance_v2)
- ovh provider for DNS (ovh_domain_zone_record)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

index.html

@@ -206,20 +206,23 @@
     <pre><code class="language-hcl" data-trim>
 terraform {
   required_providers {
-    aws = { source = "hashicorp/aws", version = "~> 5.0" }
+    openstack = { source = "terraform-provider-openstack/openstack", version = "~> 3.0" }
+    ovh       = { source = "ovh/ovh", version = "~> 1.0" }
   }
 }
 
-provider "aws" { region = "eu-west-3" }
-
-resource "aws_instance" "web" {
-  ami           = "ami-0c55b159cbfafe1f0"
-  instance_type = "t3.micro"
-  tags = { Name = "finistdevs-web" }
+resource "openstack_compute_instance_v2" "web" {
+  name        = "finistdevs-web"
+  image_name  = "Debian 12"
+  flavor_name = "b3-8"
+  network { name = "Ext-Net" }
 }
 
-output "public_ip" {
-  value = aws_instance.web.public_ip
+resource "ovh_domain_zone_record" "web" {
+  zone      = "example.com"
+  subdomain = "finistdevs"
+  fieldtype = "A"
+  target    = openstack_compute_instance_v2.web.access_ip_v4
 }
     </code></pre>
   </section>