Solve user guide docs dependencies

[ItayGabbay]

Update "dataset object" documentation to have the concepts, and link to API reference for the parameters.

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From original discussion:
Yes I agree that this isn't sustainable over time. It can be useful for now (assuming it's still updated)

I discussed this with @matanper, who is the one that wrote this specific page :) (I just appended it as part of the PR because the context was relevant and he was away) that we should shorten this description, and add a link to the API reference... However for now let's keep it as is and work on it as a separate small task (because till we update it I think it's still better to have this version rather than not have anything)

Originally posted by @shir22 in #340 (comment)