...ependencies

We should be using `type` instead of `classifer` for javadoc
dependencies, as using `classifier` in a multi-module build will default
to `target/classes` of the dependency if a
`target/module-classifier.jar` is not present, whereas using `type` will
try to resolve the dependency and possibly load one from the local or
remote repository.

This should fix the issue breaking the build currently.