REF: in sct_straighten_spinalcord: use save_qulaity_control() instead of save_plane()
REF: in sct_straighten_spinalcord: use save_qulaity_control() instead of save_plane()

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox