Update links for Terraform module indexes (#394)

* Update links for Terraform module indexes

* Update instructions for AVM CSV file links

As recommended by Copilot review, added a note regarding the links to the latest CSV files and suggested using specific release tags for point-in-time versions.

Author: matebarabas

instructions/azure-verified-modules-terraform.instructions.md

@@ -34,10 +34,12 @@ More details on the AVM process can be found in the [Azure Verified Modules Cont
 
 ### Official AVM Index
 
-- **Terraform Resources**: `https://azure.github.io/Azure-Verified-Modules/indexes/terraform/tf-resource-modules/`
-- **Terraform Patterns**: `https://azure.github.io/Azure-Verified-Modules/indexes/terraform/tf-pattern-modules/`
-- **Bicep Resources**: `https://azure.github.io/Azure-Verified-Modules/indexes/bicep/bicep-resource-modules/`
-- **Bicep Patterns**: `https://azure.github.io/Azure-Verified-Modules/indexes/bicep/bicep-pattern-modules/`
+> **Note:** The following links always point to the latest version of the CSV files on the main branch. As intended, this means the files may change over time. If you require a point-in-time version, consider using a specific release tag in the URL.
+
+- **Terraform Resource Modules**: `https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/static/module-indexes/TerraformResourceModules.csv`
+- **Terraform Pattern Modules**: `https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/static/module-indexes/TerraformPatternModules.csv`
+- **Terraform Utility Modules**: `https://raw.githubusercontent.com/Azure/Azure-Verified-Modules/refs/heads/main/docs/static/module-indexes/TerraformUtilityModules.csv`
+
 
 ## Terraform Module Usage