Update p5.Renderer.js
Update p5.Renderer.js

fix `textLeading`'s return when called in its chainable form.
nucliweb/p5.js,bomoko/p5.js,processing/p5.js,processing/p5.js,limzykenneth/p5.js,nucliweb/p5.js,dhowe/p5.js,joecridge/p5.js,limzykenneth/p5.js,dhowe/p5.js,mlarghydracept/p5.js,bomoko/p5.js,mlarghydracept/p5.js,joecridge/p5.js