# Changes

## Summary

1. [SPARK-25754][DOC] Change CDN for MathJax (details)
 Commit 2ab4473bed44828cee5a47759b5c36fc81dd5d71 by sean.owen[SPARK-25754][DOC] Change CDN for MathJax## What changes were proposed in this pull request?Currently when we open our doc site:https://spark.apache.org/docs/latest/index.html , there is one warning![image](https://user-images.githubusercontent.com/1097932/47065926-2b757980-d217-11e8-868f-02ce73f513ae.png)This PR is to change the CDN as per the migration tips:https://www.mathjax.org/cdn-shutting-down/This is very very trivial. But it would be good to follow the suggestionfrom MathJax team and remove the warning, in case one day the originalCDN is no longer available.## How was this patch tested?Manual check.Closes #22753 from gengliangwang/migrateMathJax.Authored-by: Gengliang Wang Signed-off-by: Sean Owen  docs/_layouts/global.html (diff) docs/js/api-docs.js (diff)