docs: Use the correct terminology for g_array_free
docs: Use the correct terminology for g_array_free

GArray uses the term clear_func (eg., g_array_set_clear_func), while
element_free_func comes from GPtrArray.

https://gitlab.gnome.org/GNOME/glib/merge_requests/348

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib