Another thing I spotted is the example provided in https://github.com/ropensci/onboarding/blob/master/packaging_guide.md#-documentation
while it is just an example, better to avoid restricted characters there.
The mandatory ‘Package’ field gives the name of the package. This should contain only (ASCII) letters, numbers and dot, have at least two characters and start with a letter and not end in a dot. If it needs explaining, this should be done in the ‘Description’ field (and not the ‘Title’ field).
?package_name-package would become