First cell in cheatsheet is invalid

[ablaom]

Here's how the source for the cheatsheet renders over at the manual:

This is valid.

Here's how it is being rendered on the MLJ web site (this repo):

Which is not valid code, and does not include the version of MLJ.

[EssamWisam]

I believe it's because this cell uses julia > which seems to be not assumed by the highlighter/parser I am using as opposed to pure Julia code.

If you like them to stick there, I can "hard code" some logic that automatically strips them for the purposes of this cheatsheet in the website code.