[v2]  Document Prometheus metrics for KEDA Metrics API Server
- Add support for multiple triggers on ScaledObject ([#476](https://github.com/kedacore/keda/issues/476))
- Add consumer offset reset policy option to Kafka scaler ([#925](https://github.com/kedacore/keda/pull/925))
- Add option to restore to original replica count after ScaledObject's deletion ([#219](https://github.com/kedacore/keda-docs/pull/219))
+- Add Prometheus metrics for KEDA Metrics API Server ([#823](https://github.com/kedacore/keda/issues/823) | [docs](https://keda.sh/docs/2.0/operate/#prometheus-exporter-metrics))
### Improvements
