Revive docs

[ErikQQY]

I think this PR could revive the documentation

JuliaCon hackathon yeah!!🥳

Fixes #846

[ErikQQY]

It's so weird, the CI log doesn't show any useful information about the errors.

I checked the commit history and found that PR #819 broke the documentation, there was an error about the code in the new docs:

using Flux, Tracker

x = [0.8; 0.8]
ann = Chain(Dense(2, 10, tanh), Dense(10, 1))
p, re = Flux.destructure(ann)
z = re(Float64(p))

error:

ERROR: MethodError: no method matching Float64(::Vector{Float32})

Closest candidates are:
  (::Type{T})(::AbstractChar) where T<:Union{AbstractChar, Number}
   @ Base char.jl:50
  (::Type{T})(::Base.TwicePrecision) where T<:Number
   @ Base twiceprecision.jl:266
  (::Type{T})(::Flux.NilNumber.Nil) where T<:Number
   @ Flux D:\Julia\.julia\packages\Flux\n3cOc\src\outputsize.jl:18
  ...

[ChrisRackauckas]

That code isn't ran though, so it can't be the issue?

[ErikQQY]

Yeah, the CI still failed. Maybe we can try reverting PR #819?

[ChrisRackauckas]

@avik-pal looks like a display error in Lux? https://github.com/SciML/DiffEqFlux.jl/actions/runs/5705070398/job/15459319933?pr=848 . I made it so it won't display. Let's see if that fixes the docs.