Update setup.html (#24266)
Update setup.html (#24266)

Make the language a bit clearer.
mrdoob/three.js,gero3/three.js,06wj/three.js,makc/three.js.fork,makc/three.js.fork,mrdoob/three.js,WestLangley/three.js,aardgoose/three.js,aardgoose/three.js,06wj/three.js,gero3/three.js,WestLangley/three.js