Doc - import files commands
Doc - import files commands

Doing a new PR for https://github.com/GeotrekCE/Geotrek-admin/pull/1833/files which couldn't go into ``master``.
makinacorpus/Geotrek,GeotrekCE/Geotrek-admin,GeotrekCE/Geotrek-admin,GeotrekCE/Geotrek-admin,makinacorpus/Geotrek,GeotrekCE/Geotrek-admin,makinacorpus/Geotrek,makinacorpus/Geotrek