path to vtk build is not right in macos build doc.

[maidamai0]

The build path of vtk should be QuickVtk/denpendencies/src instead of QuickVtk/lib/src

[qCring]

Yes, you're right. This is due to some project structure changes from the current refactoring. I didn't update the docs yet but this will be fixed soon. Thanks for the hint, I'll keep this issue open until the docs are in sync with the codebase which should happen soon.