DOC: Port missing cookbook commit
DOC: Port missing cookbook commit

This ports this commit from otb-documents which didn't make it in time
for the merge:
https://git.orfeo-toolbox.org/otb-documents.git/commit/aa31a5cf9a514f1f03cfb9b9102aa6afaeb4f78e

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