Lamb vector

When trying to compute the Lamb vector function object as suggested in the guide with:

postProcess -func lambVector

I receive the following error:

Cannot find functionObject file lambVector

Moreover, the tutorial suggested in the guide to test the Lamb vector does not exist in the path:

$FOAM_TUTORIALS/incompressible/pimpleFoam/LES/motorBike

## Reattaching the author to the issue ticket: @Ricky-11 ##