Update docs for otel span errors and exceptions

Hello, Justin Schrader from the DT team here. We've released a new feature allowing uses to see OTEL span events & errors.

src/content/docs/distributed-tracing/ui-data/understand-use-distributed-tracing-ui.mdx

@@ -485,6 +485,21 @@ Here are some additional distributed tracing UI details, rules, and limits:
             The response code for these spans is captured as an attribute `httpResponseCode` and attached to that span.
           </td>
         </tr>
+        <tr>
+          <td>
+            OpenTelemetry Errors
+          </td>
+
+          <td>
+            * `otel.status = error` will display the span as having an error.
+            * `otel.status_code` will display the status code in the error details box.
+            * `otel.status_description` will display the error description in the error details box.
+
+            Note: OpenTelemetry _exceptions_ are displayed independently of span _error_ status.
+
+            OpenTelemetry Span event exceptions are accessible via Span details by clicking the "view span events" link, but are not necessarily associated with a Span error status.
+          </td>
+        </tr>
       </tbody>
     </table>
   </Collapser>