update java docs

Author: liustve

awsagentprovider/src/main/java/software/amazon/opentelemetry/javaagent/providers/exporter/aws/metrics/AwsCloudWatchEmfExporter.java

@@ -23,7 +23,7 @@
 import software.amazon.opentelemetry.javaagent.providers.exporter.aws.common.emitter.LogEventEmitter;
 
 /**
- * Metrics exporter for CloudWatch EMF format.
+ * EMF metrics exporter for sending data directly to CloudWatch Logs.
  *
  * <p>This exporter converts OTel metrics into CloudWatch EMF logs which are then sent to CloudWatch
  * Logs. CloudWatch Logs automatically extracts the metrics from the EMF logs.

awsagentprovider/src/main/java/software/amazon/opentelemetry/javaagent/providers/exporter/aws/metrics/ConsoleEmfExporter.java

@@ -23,6 +23,7 @@
 import software.amazon.opentelemetry.javaagent.providers.exporter.aws.common.emitter.ConsoleEmitter;
 import software.amazon.opentelemetry.javaagent.providers.exporter.aws.common.emitter.LogEventEmitter;
 
+/** EMF metrics exporter for printing data to Standard Out. */
 public class ConsoleEmfExporter extends BaseEmfExporter<PrintStream> {
   private static final Logger logger = Logger.getLogger(ConsoleEmfExporter.class.getName());
 
@@ -36,7 +37,7 @@ public ConsoleEmfExporter(String namespace) {
   }
 
   /**
-   * Initialize the Console EMF exporter with custom emitter for testing.
+   * Initialize the Console EMF exporter with custom emitter.
    *
    * @param namespace CloudWatch namespace for metrics
    * @param emitter Custom emitter