Show some screenshots in about page (#19)

Author: jotak

content/about.md

@@ -10,3 +10,15 @@ layout: :theme/page
 NetObserv is a set of components used to observe network traffic by generating NetFlows from [eBPF agents](https://github.com/netobserv/netobserv-ebpf-agent), enriching those flows using [a configurable pipeline](https://github.com/netobserv/flowlogs-pipeline/) which is Kubernetes-aware, exporting them in various ways (logs, metrics, Kafka, IPFIX...), and finally providing a comprehensive [visualization tool](https://github.com/netobserv/network-observability-console-plugin/) for making sense of that data, and [a CLI](https://github.com/netobserv/network-observability-cli). Those components can be used as standalones or deployed in Kubernetes / OpenShift via an [integrated Operator](https://github.com/netobserv/network-observability-operator/).
 
 It is known and distributed in Red Hat OpenShift as the [Network Observability operator](https://docs.openshift.com/container-platform/latest/observability/network_observability/network-observability-operator-release-notes.html).
+
+## Topology view
+
+![Topology]({page.image('about/topology-main.png')})
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+## Traffic flows view
+
+![Traffic flows]({page.image('about/network-traffic-main.png')})
+
+## Overview dashboard
+
+![Overview charts]({page.image('about/overview-dashboard.png')})