Updates how-to-contribute.md to use JSFiddle referenced in submit Git issue template (#9503)

Author: jenjwong

docs/contributing/how-to-contribute.md

@@ -39,7 +39,7 @@ We are using [GitHub Issues](https://github.com/facebook/react/issues) for our p
 
 #### Reporting New Issues
 
-The best way to get your bug fixed is to provide a reduced test case. This [JSFiddle template](https://jsfiddle.net/reactjs/69z2wepo/) is a great starting point.
+The best way to get your bug fixed is to provide a reduced test case. This [JSFiddle template](https://jsfiddle.net/84v837e9/) is a great starting point.
 
 #### Security Bugs