I wonder how many spelling mistakes we can find in various records in OALC... This is a great reason for OLAC to retain the kind of language the record is in.
https://opensource.com/article/18/2/aspell
Install with my blog workflow:
https://github.com/tbroadley/spellchecker-cli
other options: https://vi.stackexchange.com/questions/22220/how-to-make-spell-check-work-for-text-inside-a-xml-file
https://metacpan.org/dist/XML-Twig/view/tools/xml_spellcheck/xml_spellcheck