Repair global-auto-revert-ignore-modes (bug#42271)
Reported by Gustavo Tavares Cabral. * lisp/autorevert.el (auto-revert--global-add-current-buffer): Fix typo.
Reported by Gustavo Tavares Cabral. * lisp/autorevert.el (auto-revert--global-add-current-buffer): Fix typo.