Avoid full paths

[lcolladotor]

I recommend avoiding full paths like https://github.com/LieberInstitute/VisiumImgProcessing/blob/705329a25b21f818e62a3606fec4a7af1f757192/Step1.Rmd#L8 since that means that a user has to modify the code before they can run it themselves. Instead, you can add a step saying something like "cd directory_where_you_downloaded_the_files".

This can be related to #2.