Rename 'Java Modules' samples to match the names of previous releases
Rename 'Java Modules' samples to match the names of previous releases

This also repairs broken links from the user manual to these samples.

gradle/gradle,gradle/gradle,gradle/gradle,blindpirate/gradle,gradle/gradle,blindpirate/gradle,gradle/gradle,blindpirate/gradle,gradle/gradle,blindpirate/gradle,blindpirate/gradle,gradle/gradle,gradle/gradle,blindpirate/gradle,blindpirate/gradle,blindpirate/gradle,gradle/gradle,gradle/gradle,blindpirate/gradle,blindpirate/gradle