/usr/share/myspell/dicts/fi_FI.aff is in myspell-fi 0.7-18.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/myspell/dicts/../../hunspell/fi_FI.aff
/usr/share/myspell/dicts/../../hunspell/fi_FI.aff