Add meta issue reference to the dynamic control readme (#2476)

Author: jackshirazi

dynamic-control/README.md

@@ -6,6 +6,8 @@ Adding dynamic control of some specific features of the Java agent.
 > This is an incubating feature. Breaking changes can happen on a new release without previous
 > notice and without backward compatibility guarantees.
 
+Current plans and progress is tracked in this [meta issue](https://github.com/open-telemetry/opentelemetry-java-contrib/issues/2416)
+
 ## Component owners
 
 - [Jack Shirazi](https://github.com/jackshirazi), Elastic