Force fenced code blocks to use smaller font
Force fenced code blocks to use smaller font

This prevents horisontal scollbars in desktop browsers for all current code examples

fatso83/Sinon.JS,mroderick/Sinon.JS,mroderick/Sinon.JS,fatso83/Sinon.JS,cjohansen/Sinon.JS,fatso83/Sinon.JS,cjohansen/Sinon.JS,mroderick/Sinon.JS,cjohansen/Sinon.JS