Fixes errors related to Greek numerals. This change introduces
whitespace errors.

This commit is based on the substantive changes made in commit
8f6508f6d2851250b75ea373ed082e376c4d37a8 in the Greek Reference Database
Creator repository. That commit also introduced whitespace changes
throughout the file. In order to avoid replicating those changes here, I
generated a diff using the git diff --ignore-all-space option. I then
applied that patch to the file in this repository using the git apply
--ignore-whitespace option.