Summary:
efl_ui_format_string_set was not working well.
Changed default format text. ("++++ %d" text for test only.)
@fix
Reviewers: Jaehyun_Cho, cedric, woohyun
Reviewed By: Jaehyun_Cho
Subscribers: zmike, cedric
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D6044