Redo Amplication Getting Started Sidebar

[dericksozo]

No description provided.

[PazYanoverr]

@dericksozo - I think that the platform feature topic was great. My only comment was that the Documentation itself is the "parent" of only the overview and the "create your first", and I would expect that the Documentation will be the title of all the docs, with no collapse / expand options for it, and the overview + "create your first" will be at the same level of the topics like platform features.
Does it make sense?

[dericksozo]

That makes sense, @PazYanoverr. I implemented your feedback into the PR.