fix broken jsdelivr cdn link
fix broken jsdelivr cdn link

For 'http://www.jsdelivr.com/#!hint.css' resolves to 'https://www.jsdelivr.com/package/npm/hint', changed old link to 'https://www.jsdelivr.com/package/npm/hint.css', which is full correct link of this project.
chinchang/hint.css,chinchang/hint.css