jldoctest didn't used to support repl mode so we have a bunch of code blocks with julia-repl tags that should really be jldoctest instead.

Or, if you're feeling ambitious, it would be nice to audit all code blocks (grep for ```) and make as many as possible jldoctest.

Advice for folks implementing this

• Read https://documenter.juliadocs.org/stable/man/doctests/
• Start with a small PR changing no more than 1 or 2 blocks
• Update the output so that it matches a REPL session (you can copy and paste into a REPL and see what prints)
• Check to see if doctests pass (instructions)