INST: installer: minor modif
INST: installer: minor modif

Former-commit-id: c5503b296a40decc67aafa6ddf4178d21356bdab [formerly c5c20aff2165f8281942c15904b0c0bfb93d2aff]
Former-commit-id: a7f0c3bd15975dcdbfa8a31b3a3cd3374e6cdff8
Former-commit-id: b385bf3f99e05e49b44976bdea19e6d33fd328b8
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox