goes through the sections in the documents and creates the
OnlineHelpInfo.js file from the explicitly defined section labels which
are used in the js files with 'onlineHelp' variable.
content is > 90% same as local-zfs.adoc in pve-docs.
adapted the format for .rst
fixed some typos and wrote some parts slightly different (wording).
Signed-off-by: Oguz Bektas <o.bektas@proxmox.com>
