fixed doc

src/core/Face3.d.ts

@@ -70,7 +70,7 @@ export class Face3 {
 	normal: Vector3;
 
 	/**
-	 * Array of 4 vertex normals.
+	 * Array of 3 vertex normals.
 	 */
 	vertexNormals: Vector3[];
 
@@ -80,7 +80,7 @@ export class Face3 {
 	color: Color;
 
 	/**
-	 * Array of 4 vertex normals.
+	 * Array of 3 vertex colors.
 	 */
 	vertexColors: Color[];