Handle long documentation examples

[workergnome]

In https://github.com/processing/p5.js/issues/726, @dhowe suggested that we need to handle inline example lines that are longer than fit in a window. Suggestions include making it expand on mouseover, horizontal scrolling, or (less preferred) automatic word wrap.

[PaliwalSparsh]

@workergnome I looked it in chrome firefox and internet all were having automatic word wrap. No data was going out of bounds.