show a screenshot of the Grafana link (#816)

fixes: kiali/kiali#7704

content/en/docs/Configuration/p8s-jaeger-grafana/grafana.md

@@ -16,8 +16,14 @@ options.
 
 Kiali can provide a direct link from its metric dashboards to the equivalent or
 most similar Grafana dashboard, which is convenient if you need the powerful
-Grafana options. For these links to appear in Kiali you need to manually
-configure the Grafana URL and the dashboards that come preconfigured with Istio, like in the following example:
+Grafana options.
+
+The Grafana links will appear in the Kiali metrics pages. For example:
+
+![Kiali Grafana Links](/images/documentation/configuration/grafana-link.png)
+
+For these links to appear in Kiali you need to manually configure the Grafana URL
+and the dashboards that come preconfigured with Istio, like in the following example:
 
 {{% alert color="warning" %}}
 Kiali will query Grafana and try to fetch the configured dashboards.  For this reason Kiali must be able to reach Grafana, authenticate, and find the Istio dashboards. The Istio dashboards must be installed in Grafana for the links to appear in Kiali.