elm_entry_common.h: added more description to elm_entry_utf8_to_markup api.
elm_entry_common.h: added more description to elm_entry_utf8_to_markup api.

rvandegrift/elementary,tasn/elementary,tasn/elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary