docs: reference to Java Elastic distribution

.github/README.md

@@ -1,7 +1,9 @@
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 # <img src="https://opentelemetry.io/img/logos/opentelemetry-logo-nav.png" alt="OTel logo" width="32"> :heavy_plus_sign: <img src="https://images.contentstack.io/v3/assets/bltefdd0b53724fa2ce/blt601c406b0b5af740/620577381692951393fdf8d6/elastic-logo-cluster.svg" alt="OTel logo" width="32"> OpenTelemetry Demo with Elastic Observability
 
-The following guide describes how to setup the OpenTelemetry demo with Elastic Observability using [Docker compose](#docker-compose) or [Kubernetes](#kubernetes).
+The following guide describes how to setup the OpenTelemetry demo with Elastic Observability using [Docker compose](#docker-compose) or [Kubernetes](#kubernetes). This fork introduces several changes to the agents used in the demo:
+
+- The Java agent within the [Ad](../src/adservice/Dockerfile#L27) and [Fraud Detection](../src/frauddetectionservice/Dockerfile#L21) services have been replaced with the Elastic distribution of the OpenTelemetry Java Agent. You can find more information about the Elastic distribution in [this blog post](https://www.elastic.co/observability-labs/blog/elastic-distribution-opentelemetry-java-agent).
 
 ## Docker compose