DOC: adding a todo for sct_register_to_template
DOC: adding a todo for sct_register_to_template

Former-commit-id: c9713aa521cbe922b440445d815172206c2b2e9f
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox