DOC: go to 8 level for the software guide after Jordi's correction
DOC: go to 8 level for the software guide after Jordi's correction

orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB