efl/hint: fix hint_align docs
Summary:
the docs should not assume that the current language is LTR and should
instead specify that the horizontal direction depends on the language
reading direction
Reviewers: segfaultxavi
Reviewed By: segfaultxavi
Subscribers: cedric, reviewers, committers
Tags: efl
Differential Revision: https://phab.enlightenment.org/D9911