Change mathjax cdn (#2145)
Change mathjax cdn (#2145)

* Change mathjax cdn

* Update conf.py

cseed/hail,hail-is/hail,hail-is/hail,danking/hail,cseed/hail,hail-is/hail,hail-is/hail,cseed/hail,cseed/hail,danking/hail,danking/hail,cseed/hail,hail-is/hail,danking/hail,danking/hail,cseed/hail,danking/hail,cseed/hail,hail-is/hail,hail-is/hail,danking/hail,hail-is/hail,danking/hail,cseed/hail