docs: remove duplicate list of add-ons

[benmccann]

probably don't need these anymore since #546

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commit: 297b4d4

[manuel3108]

Personally, I think the list is very needed, especially on mobile as you don't see the all the available on a first glance and you first need to have the idea of opening the navigation to get that navigation. Instead, I think we should link each adder to the details page