chore: updates website architecture documentation

Adds links to Terraform and Pulumi modules

Author: davemooreuws

docs/architecture/websites.mdx

@@ -136,7 +136,9 @@ async function fetchData() {
 **Operations** will use or extend the Nitric infrastructure modules, including both Terraform and Pulumi:
 
 - Terraform Modules:
-  - Not yet available
+  - [Azure Website Terraform Module](https://github.com/nitrictech/nitric/blob/main/cloud/azure/deploytf/.nitric/modules/website/main.tf)
+  - [Google Cloud Website Terraform Module](https://github.com/nitrictech/nitric/blob/main/cloud/gcp/deploytf/.nitric/modules/website/main.tf)
 - Pulumi Modules:
   - [AWS Website Pulumi Module](https://github.com/nitrictech/nitric/blob/main/cloud/aws/deploy/website.go)
   - [Azure Website Pulumi Module](https://github.com/nitrictech/nitric/blob/main/cloud/azure/deploy/website.go)
+  - [Google Cloud Website Pulumi Module](https://github.com/nitrictech/nitric/blob/main/cloud/gcp/deploy/website.go)