Hello,
This Github issue gave me some insight:
contribs.txt not updating? · Issue #861 · processing/processing-docs · GitHub
p5js mode is not listed here:
https://download.processing.org/contribs
And there is a new p5js Mode here:
GitHub - fathominfo/processing-p5js-mode: A simple editor for p5.js code that runs inside the PDE
I opened a Github issue here:
contribs.txt not updating? · Issue #863 · processing/processing-docs · GitHub
:)