Improving "Interactive elements can enhance accessibility" section

[hturner]

Currently the {ggplotly} plot doesn't show, I'm not sure why.

It would be good to expand the example to illustrate the point "Generally, additional label details to the aes() in ggplot, or using ggplotly() parameters, provides more careful details of what to show on the pop-up text." - this is something I'm not familiar with and I guess would be new to a lot of people.