Update information about CW Logs metadata translation (#405)

Author: rapphil

src/docs/getting-started/x-ray.mdx

@@ -184,12 +184,14 @@ exporters:
 
 ##### OTel span CW Logs metadata translation
 
+The attributes in this section are translated into the AWS resource field `cloudwatch_logs`. This resource field is used to correlate Cloudwatch Log Groups with the segments associated with it. This correlation can be explored when analyzing individual traces in the X-Ray console.
+
 | OTel Attributes env var | X-Ray data model field    | Notes                                                                                                                                                                                                                                                                                                                                       |
 |-------------------------|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| aws.log.group.arns      | cloudwatch_logs.arn       | <ul><li> If value of aws.log.group.arns is not an empty slice, then the exporter creates a CloudWatch log object with log group and ARN for all ARNs. If aws.log.group.arns value is an empty slice and value of aws.log.group.names is not an empty slice, then exporter creates a CloudWatch log object with only a log group. </li></ul> |
-| aws.log.group.names     | cloudwatch_logs.log_group |                                                                                                                                                                                                                                                                                                                                             |
+| aws.log.group.arns      | cloudwatch_logs.arn       |                                                                                                                                                                                                                                                                                                                                             |
+| aws.log.group.names     | cloudwatch_logs.log_group | If both `aws.log.group.arns` and `aws.log.group.names` are defined, precedence is given to `aws.log.group.arns`                                                                                                                                                                                                                             |
 
-See [AWS X-Ray Segment Documents](https://docs.aws.amazon.com/xray/latest/devguide/xray-api-segmentdocuments.html) for more information on the AWS X-Ray data model. See [OpenTelemetry data model spec](https://github.com/open-telemetry/opentelemetry-specification) for more information on OpenTelemetry data model.
+See [AWS X-Ray Segment Documents](https://docs.aws.amazon.com/xray/latest/devguide/xray-api-segmentdocuments.html) for more information on the AWS X-Ray data model. See [OpenTelemetry data model spec](https://github.com/open-telemetry/opentelemetry-specification) for more information on OpenTelemetry data model. See [X-Ray Logging Configuration](https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-java-configuration.html#xray-sdk-java-configuration-logging) for references of expected log pattern.
 
 ### Enable The Customized X-Ray Annotations
 By using OpenTelemetry SDK, we can add the customized attributes for each trace subsegment. By default, these OpenTelemetry