Replace the non-existent docs/grafana-api-dashboard.json reference with
pointers to the actual Flux ConfigMap dashboard locations:
- flux/monitoring/grafana-dashboard-apis.yaml (consolidated 4-API dashboard)
- flux/monitoring/vin-decoder-dashboard.yaml (VIN Decoder-specific dashboard)
Note that dashboards are auto-loaded via grafana_dashboard: "1" label.
Remove the (TBD) annotation — dashboards are already committed.
Closesleeworks-agents/api-company#238