Update batch_processing.sh
Update batch_processing.sh

Former-commit-id: 86987151ff6a4853ca1ed09c48941eb573c66606
Former-commit-id: 97c709f95190da479a6bdfa53092f3ec7eee1ee1
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox