CSS/JavaScript in the first code block of docs examples

[eteppo]

I was reading the examples and noticed there is a lot of CSS/JavaScript in the first code block. Some kind of Documenter/Literate rendering issue? I could help fix it but I have no idea where it's coming from.

[willtebbutt]

Ah, yes. I do not immediately know where it's coming from either, but it certainly looks like a Literate.jl / Documenter.jl problem. Someone would need to have a dig in order to figure out what has happened.