docs: satisfy markdown lint newline contract

Author: Aitomates

docs/10-audit-readiness.md

@@ -79,4 +79,4 @@ Evidence failure is a control-operating issue, not an administrative warning.
 
 - Risk management: [`09-risk-management.md`](09-risk-management.md)
 - Incident response: [`11-incident-response.md`](11-incident-response.md)
-- Threat model: [`23-threat-model.md`](23-threat-model.md)
+- Threat model: [`23-threat-model.md`](23-threat-model.md)

docs/20-runbooks/rbk-005-azure-arc-onboarding.md

@@ -29,4 +29,4 @@ Onboard hybrid servers to Azure Arc with consistent policy and logging while pre
 - Dry-run JSONL record and approved change reference
 - Approved package version and execution identity
 - Azure Arc connectivity and policy compliance snapshots
-- Log ingestion validation and rollback outcome
+- Log ingestion validation and rollback outcome

docs/23-threat-model.md

@@ -61,4 +61,4 @@ flowchart LR
 - Reference architecture: [`04-reference-architecture.md`](04-reference-architecture.md)
 - Risk management: [`09-risk-management.md`](09-risk-management.md)
 - Audit readiness: [`10-audit-readiness.md`](10-audit-readiness.md)
-- Incident response: [`11-incident-response.md`](11-incident-response.md)
+- Incident response: [`11-incident-response.md`](11-incident-response.md)