update readme

Author: SylvainJuge

jmx-scraper/README.md

@@ -1,6 +1,8 @@
 # JMX Metric Scraper
 
 This utility provides a way to query JMX metrics and export them to an OTLP endpoint.
-The JMX MBeans and their metrics mapping is defined in YAML.
+The JMX MBeans and their metrics mapping is defined in YAML and is reusing implementation from
+[jmx-metrics instrumentation](https://github.com/open-telemetry/opentelemetry-java-instrumentation/tree/main/instrumentation/jmx-metrics).
 
-This is currently experimental, but the end goal is to provide an alternative to the [jmx-metrics](../jmx-metrics/README.md) utility.
+This is currently a work-in-progress component not ready to be used in production.
+The end goal is to provide an alternative to the [JMX Gatherer](../jmx-metrics/README.md) utility.