[Docs] Find new applications examples for the docs

[lrnv]

Link to JOSS review : https://github.com/openjournals/joss-reviews/issues/6189

Luca wrote:

Currently the documentation feels to have more theory than code, it would be nice to expand the Examples section with a few more examples of how to use the code, ideally within some applications of how to solve some "real-world" problems. E.g. applying Copulas.jl to some popular datasets and concrete example problems.

Thus we need to find a use-case ona popular dataset or concrete problem to add it to the docs.

@Santymax98 Maybe you have in your work one simple use-case that could be shown ?

[lrnv]

@lucaferranti what do you think of the current state of the example section in the docs ? (look at the dev version there: https://lrnv.github.io/Copulas.jl/dev/ i did not pushed a new release to stable yet, so you can compare with stable directly).

If this is good for you, then please close this. Otherwise I can continue thinking of a few examples to add. Also consider the additions done for #142 that are more "spread out" in the documentation.

[lucaferranti]

I think the examples section looks much better now and I'm satisfied.

I cannot close this issue, but I've marked the box in the reivew checklist and notified the editor that the paper is ready from my side

[lrnv]

Reoppend because we have a last example to add before pushing a new version fully, will not take long IMHO.