[MNGSITE-369] Improve docs about dependency resolution within Multi module build

**[Karl Heinz Marbaise](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=khmarbaise)** opened **[MNGSITE-369](https://issues.apache.org/jira/browse/MNGSITE-369?redirect=false)** and commented

We should enhance the docs about how dependencies are resolved within a multi module build.
See for details:
https://stackoverflow.com/questions/55433668/maven-multi-module-dependency-resolution/55434795?noredirect=1#comment97621312_55434795

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1 votes, 2 watchers

Start with the linked Stack Overflow discussion and locate the existing Maven documentation covering dependency resolution in multi-module builds. Compare the current explanation with that discussion and update the relevant documentation so the resolution behavior and expected result are clear.

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