feat: add link to Grafana dashboard config file on docs (paradigmxyz#…

…3373)

Co-authored-by: Matthias Seitz <[email protected]>

book/run/observability.md

@@ -51,7 +51,7 @@ Once you've logged in, click on the gear icon in the lower left, and select "Dat
 
 As this might be a point of confusion, `localhost:9001`, which we supplied to `--metrics`, is the endpoint that Reth exposes, from which Prometheus collects metrics. Prometheus then exposes `localhost:9090` (by default) for other services (such as Grafana) to consume Prometheus metrics.
 
-To configure the dashboard in Grafana, click on the squares icon in the upper left, and click on "New", then "Import". From there, click on "Upload JSON file", and select the example file in `reth/etc/grafana/overview.json`. Finally, select the Prometheus data source you just created, and click "Import".
+To configure the dashboard in Grafana, click on the squares icon in the upper left, and click on "New", then "Import". From there, click on "Upload JSON file", and select the example file in [`reth/etc/grafana/overview.json`](https://github.com/paradigmxyz/reth/blob/main/etc/grafana/dashboards/overview.json). Finally, select the Prometheus data source you just created, and click "Import".
 
 And voilá, you should see your dashboard! If you're not yet connected to any peers, the dashboard will look like it's in an empty state, but once you are, you should see it start populating with data.
 
@@ -64,4 +64,4 @@ This will all be very useful to you, whether you're simply running a home node a
 [installation]: ../installation/installation.md
 [release-profile]: https://doc.rust-lang.org/cargo/reference/profiles.html#release
 [docs]: https://github.com/paradigmxyz/reth/tree/main/docs
-[metrics]: https://github.com/paradigmxyz/reth/blob/main/docs/design/metrics.md#current-metrics
+[metrics]: https://github.com/paradigmxyz/reth/blob/main/docs/design/metrics.md#current-metrics