batch_processing.sh: Replaced propseg by deepseg_sc (#2377)
batch_processing.sh: Replaced propseg by deepseg_sc (#2377)

Fixes #2356

Former-commit-id: 7087f8701dffd3ffa25f99f347a55bba131d2f34
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox