Remove another trailing space

Author: davepagurek

src/webgl/loading.js

@@ -30,7 +30,7 @@ import './p5.Geometry';
  * `.mtl` files, p5.js will attempt to load and apply those materials.
  * To ensure that the `.obj` file reads the `.mtl` file correctly include the
  * `.mtl` file alongside it.
- * 
+ *
  * The first way to call `loadModel()` has three optional parameters after the
  * file path. The first optional parameter, `successCallback`, is a function
  * to call once the model loads. For example,