Update the README file (#1225)
Update the README file (#1225)

The link to `Getting started` is invalid. Replace it with 2 links on
`batch_processing_t1.sh` and `batch_processing_t2.sh`


Former-commit-id: 1b65e3b51c078939a2e690275c128ffc86f28975
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox