docs: add a link to documentation of AwkwardArray in Julia

[ianna]

AwkwardArray in Julia documentation is created by Documenter.jl.

[ianna]

@jpivarski - I'm not sure why the packaging test on ubuntu fails.

[agoose77]

@ianna looks like we're pulling in a NumPy beta, which is not yet supported!

[jpivarski]

For now, we can ignore that test failure (or prevent NumPy 2.0.0b1 from being installed, only to have to reverse it later?), particularly for this PR, which is a documentation PR.

@tcawlfield is looking into #2936 right now. Hopefully, the changes needed are small and can be confined to nplike. The first issue, numpy.AxisError moving to some other path, would be easy to fix. Before making major changes, like putting an upper cap on NumPy version, we need to get a sense of how many issues there are and how long it will take.

[jpivarski]

Note to self: I want to find a three-dots inline Julia icon, as a replacement for the

{fas}`history`

If neither of us can find such a thing, we can call this PR done.

[ianna]

I only found an ellipsis icon among {fas}

[jpivarski]

Ha! It worked!

I'd say it's ready to merge now. The tests won't all run, since this PR doesn't touch code.