Update on line Users guide

Last edition: Wikinfo(changed_ts)? by Wikinfo(changed_by)?

When a new minor or major release is announced, some updates are needed in the online users guide: https://forge.ipsl.jussieu.fr/nemo/chrome/site/doc/NEMO/guide/html/NEMO_guide.html, at least to change the release number in the svn checout command, or to update the link to input files of reference confiurations on zenodo, amongst other things.

These Users guide pages are html pages generated from the rst files stores in doc/rst/sources in the NEMO repository.