Update primitives.js
Update primitives.js

fix scaling of `plane` geometry
dhowe/p5.js,joecridge/p5.js,mlarghydracept/p5.js,processing/p5.js,joecridge/p5.js,mlarghydracept/p5.js,nucliweb/p5.js,limzykenneth/p5.js,bomoko/p5.js,dhowe/p5.js,processing/p5.js,nucliweb/p5.js,limzykenneth/p5.js,bomoko/p5.js