Code listings: render the callout

[kcarnold]

The callout-note was showing up as part of the code example, which I don't think was what was intended.

[cscheid]

That's correct, thank you.

In case you found it because you were looking for this feature, do note the callout is now outdated, because there is a way to get filenames on executable listings on the 1.4 prerelease:

--- title: executable code listings --- ```{r} #| label: fig-1 #| fig-cap: A test #| lst-label: lst-1 #| lst-cap: The listing plot(1:10) ``` See @fig-1 and @lst-1.