Resolves: fdo#73137 undo name for 'Covariance' is different

Change-Id: I7e151ee99ef644090608fd861c9fae83c3206c1d
Reviewed-on: https://gerrit.libreoffice.org/7232
Reviewed-by: Winfried Donkers <winfrieddonkers@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>