[R-pkg-devel] How to provide a finalized PDF file in a package?

I create a cheat sheet using MS-OFFICE and  converted it at a PDF format.

I wonder in which folder of my package I should place it to be installed
with the package.

I tried instinctively in vignettes, but it doesn't seem to work correctly,
as I do not find it back in my package installation folder.

Best.
Neonira