fixed vertexNormals

Author: perminder-17

src/webgl/p5.Geometry.js

@@ -2365,13 +2365,16 @@ function geometry(p5, fn){
    *   createCanvas(100, 100, WEBGL);
    *
    *   // Create a p5.Geometry object.
-   *   myGeometry = new p5.Geometry();
-   *
+   *   myGeometry = buildGeometry(function(){
+   * 
    *   // Create p5.Vector objects to position the vertices.
    *   let v0 = createVector(-40, 0, 0);
    *   let v1 = createVector(0, -40, 0);
    *   let v2 = createVector(0, 40, 0);
    *   let v3 = createVector(40, 0, 0);
+   * 
+   * });
+   *
    *
    *   // Add the vertices to the p5.Geometry object's vertices array.
    *   myGeometry.vertices.push(v0, v1, v2, v3);
@@ -2404,7 +2407,6 @@ function geometry(p5, fn){
    * </code>
    * </div>
    */
-
   /**
    * An array that lists which of the geometry's vertices form each of its
    * faces.