remove extra columns
-### Single Instance:
+### Single Instance
- [NATS output](single-instance/nats-output.md)
- [Kafka output](single-instance/kafka-output.md)
- [Multiple outputs](single-instance/multiple-outputs.md)
-### Clusters:
+### Clusters
- [InfluxDB output](clusters/cluster_with_influxdb_output.md)
- [Prometheus output](clusters/cluster_with_prometheus_output.md)
- [Prometheus output with data replication](clusters/cluster_with_nats_input_and_prometheus_output.md)
-### Pipelines:
+### Pipelines
- [NATS to Prometheus](pipelines/nats_prometheus.md)
- [Nats to InfluxDB](pipelines/nats_influxdb.md)
