fix: update the DESCRIPTION file and the R doc according last submission

[csouchet]

Fix the CRAN submission, according the last rejection:

If there are references describing the methods in your package, please
add these in the description field of your DESCRIPTION file in the form
authors (year) doi:...
authors (year) arXiv:...
authors (year, ISBN:...)
or if those are not available: https:...
with no space after 'doi:', 'arXiv:', 'https:' and angle brackets for
auto-linking. (If you want to add a title as well please put it in
quotes: "Title")

Please always write package names, software names and API (application
programming interface) names in single quotes in title and description.
e.g: --> 'TypeScript'
Please note that package names are case sensitive.

Please fix and resubmit.

covers #10

[github-actions]

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[tbouffard]

LGTM