issue with link to an Akka sample in pekko-sample-cluster-java README.md

[pjfanning]

The pekko-sample-cluster-java README.md docs refer to:

Distributed Workers With Akka - https://developer.lightbend.com/guides/akka-distributed-workers-java/

This seems to be non-existent. We have a Scala sample like this but not a Java one.

In #33, I'm changing the link to be to the existent Scala sample. Maybe, someone with time and an interest in Java support will write the Java equivalent.

[mario-renau-a]

As a first step I will modified build.sbt from the pekko-sample-distributed-workers-scala, so instead of:

name := "pekko-distributed-workers"

Will be:

name := "pekko-distributed-workers-scala"