Update docs/advanced-config.md

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

docs/advanced-config.md

@@ -38,7 +38,7 @@ This distribution supports all the configuration options supported by the compon
 | `OTEL_TRACES_SAMPLER`                                           | `parentbased_always_on` | Stable  | Sampler to be used for traces. See [Sampling](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/sdk.md#sampling)
 | `OTEL_TRACES_SAMPLER_ARG`                                       |                         | Stable  | String value to be used as the sampler argument. Only be used if OTEL_TRACES_SAMPLER is set.
 | `SPLUNK_ACCESS_TOKEN`<br>`accessToken`                          |                         | Stable  | The optional access token for exporting signal data directly to SignalFx API.
-| `SPLUNK_REALM`<br>`realm`                                       |                         | Stable  | Choose the Splunk realm when sending data directly to the Observability Cloud.
+| `SPLUNK_REALM`<br>`realm`                                       |                         | Stable  | The name of your organization's realm, for example, ``us0``. When you set the realm, telemetry is sent directly to the ingest endpoint of Splunk Observability Cloud, bypassing the Splunk OpenTelemetry Collector.
 | `SPLUNK_TRACE_RESPONSE_HEADER_ENABLED`<br>`serverTimingEnabled` | `true`                  | Stable  | Enable injection of `Server-Timing` header to HTTP responses.
 | `SPLUNK_REDIS_INCLUDE_COMMAND_ARGS` | `false`                  | Stable  | Will include the full redis query in `db.statement` span attribute when using `redis` instrumentation.