Correct footnote example in _test.ipynb?

[lewtun]

Hi @jph00,

In the test notebook, the footnote example is shown as

A footnote[this is a footnote]

however my understanding from the AsciiDoc docs is that a colon is required to render the footnote, i.e.

A footnote:[this is a footnote]

If you agree, I'd be happy to fix the test notebook!

[jph00]

Have you tried both in asciidoctor to see if either or both render correctly?

[lewtun]

Hi Jeremy, yes I tried both and have opened a PR with the fix :)