message: add generated by section for dependency relation
diff: @@ -76,6 +76,9 @@ an entity to function. It can for example be used to express that a website
  component needs a library component as part of its build, or that a service
  component uses a persistent storage resource.
  +This relation is commonly generated based on `spec.dependsOn` of the component
  +or resource in question.
  +
  ### `parentOf` and `childOf`
  A parent/child relation to build up a tree, used for example to describe the
  