add Dash0 to next steps list

Author: kaspernissen

daprdocs/content/en/operations/observability/tracing/setup-tracing.md

@@ -77,4 +77,5 @@ Learn how to set up tracing with one of the following tools:
 - [New Relic]({{< ref newrelic.md >}})
 - [Jaeger]({{< ref open-telemetry-collector-jaeger.md >}})
 - [Zipkin]({{< ref zipkin.md >}})
-- [Datadog]({{< ref datadog.md >}})
+- [Datadog]({{< ref datadog.md >}})
+- [Dash0]({{< ref dash0.md >}})