clarify asset host change

Author: nbogie

contributor_docs/contributing_to_the_p5js_reference.md

@@ -780,9 +780,9 @@ font = await loadFont('assets/inconsolata.otf');
 ```
 The above code will load the font file, [/public/assets/inconsolata.otf](https://github.com/processing/p5.js-website/blob/2.0/public/assets/inconsolata.otf), stored in the p5.js-website repo.
 
-### Asset hosting differs from p5 v1
+#### Asset hosting differs from p5 v1
 
-Note that this hosting location is a significant change from p5 v1.x where such assets were stored instead in the _p5.js_ repo.
+Note that hosting in the _p5.js-website repo_ is a significant change from p5 v1.x where such assets were stored instead in the _p5.js_ repo.
 
 ### Re-using existing assets