Created by: StevenBlack
Two changes in the javascript button documentation, methods section: structural and cosmetic.
Before we had a h2 - h4 hierarchy. The h4 was javascript code.
Changing to a h2 - h3 hierarchy looks kind of wonky since the h3 is code, and it heads a single-line explanation.
After — in this pull request — we have an h2 with a definition list.
Note I added a p tag on the dd elements to get a better looking bottom margin between dt elements in the list.
