Remove references in superscripts, replace with original link

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Replace all:

<sup>[[blabla]][746]<sup>

end of document

[746]: https://...

by

<sup>[[blabla]](https://...)<sup>

To facilitate updates/creation, reduce the error risks with pandoc, removing a thousand useless lines/references

Basically getting rid of the remains of a past conversion from a word processor

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Solved by #212

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Done