fix(infra): quote tflint config path and fix markdown heading hierarchy

Signed-off-by: Ankit Kr. Chowdhury <rakesh856100@gmail.com>

Author: gitcommitankit

.github/workflows/terraform-lint.yml

@@ -36,7 +36,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: TFLint
-        run: tflint --chdir=infra/environments/dev --config=$(pwd)/infra/.tflint.hcl
+        run: tflint --chdir=infra/environments/dev --config="$(pwd)/infra/.tflint.hcl"
 
       - name: Trivy IaC Scan
         uses: aquasecurity/trivy-action@v0.36.0

infra/environments/prod/README.md

@@ -7,7 +7,7 @@ This environment targets an Azure Kubernetes Service (AKS) cluster for productio
 3. **High Availability**: `agentrax_leader_elect = true` with $\ge 2$ controller replicas.
 4. **Workload Identity**: Cloud identity parameters passed via `agentrax_extra_values`.
 
-### Activation Runbook (Future — Not Yet Implemented)
+## Activation Runbook (Future — Not Yet Implemented)
 
 > [!NOTE]
 > The `infra/environments/prod/` directory is a stub. No `main.tf` exists here yet. The steps below are guidance for when the production Terraform root module is implemented.