Update Trace Metrics tooltip description (#32792)

Author: brett0000FF

content/en/opentelemetry/compatibility.md

@@ -33,7 +33,7 @@ The following table shows feature compatibility across different setups:
 | [Distributed Tracing][27] | {{< X >}} | {{< X >}} | {{< X >}} | {{< X >}} |
 | [Runtime Metrics][23] | {{< X >}} | {{< X >}}<br>(Java, .NET, Go only) | {{< X >}}<br>(Java, .NET, Go only) | {{< X >}}<br>(Java, .NET, Go only) |
 | [Span Links][25] | {{< X >}} | {{< X >}} | {{< X >}} | {{< X >}} |
-| [Trace Metrics][26] | {{< X >}} | {{< X >}} | {{< X >}} | {{< X >}}<br>({{< tooltip text="Sampled" tooltip="Trace metrics are calculated on the backend based on ingested spans that have passed through sampling, not on 100% of local traces before sampling." >}}) |
+| [Trace Metrics][26] | {{< X >}} | {{< X >}} | {{< X >}} | {{< X >}}<br>({{< tooltip text="Sampled" tooltip="Calculated from spans that reach Datadog; reflects any OTel-side sampling you configure." >}}) |
 | [Database Monitoring][14] (DBM) | {{< X >}} | {{< X >}} | {{< X >}} |  |
 | [Infrastructure Host List][30] | {{< X >}} | {{< X >}} | {{< X >}} |  |
 | [Cloud Network Monitoring][21] (CNM) | {{< X >}} | {{< X >}} | | |
@@ -113,4 +113,4 @@ When using Datadog and OpenTelemetry together, Datadog recommends the following
 [27]: /tracing/trace_collection/
 [28]: /opentelemetry/setup/agentless
 [29]: /opentelemetry/setup/ddot_collector
-[30]: /infrastructure/list/
+[30]: /infrastructure/list/