Change jQuery CDN from Google to jQuery.com

Created by: coliff

I'd like to see the jQuery CDN links change to the ones hosted at jQuery.com. HTML5BoilerPlate changed from Google's Hosted Libraries to jQuery's CDN in January 2016 and now say this:

The jQuery CDN version was chosen over other potential candidates (like Google's Hosted Libraries) because it's fast (comparable or faster than Google by some measures) and, (unlike Google's CDN) is available to China's hundreds of millions of internet users. For many years we chose the Google Hosted version over the jQuery CDN because it was available over HTTPS (the jQuery CDN was not,) and it offered a better chance of hitting the cache lottery owing to the popularity of the Google CDN. The first issue is no longer valid and the second is far outweighed by being able to serve jQuery to Chinese users

REF: https://github.com/h5bp/html5-boilerplate/blob/5.3.0/dist/doc/html.md#jquery-cdn-for-jquery .