Update aaron's twitter handle (#12109)

website/blog/2016-07-27-jest-14.md

@@ -83,7 +83,7 @@ Finally, here is a quote of a Facebook engineer describing how snapshot testing
 
 ## What's next for Jest
 
-Recently [Aaron Abramov](https://twitter.com/aaronabramov_) has joined the Jest team full time to improve our unit and integration test infrastructure for Facebook's ads products. For the next few months the Jest team is planning major improvements in these areas:
+Recently [Aaron Abramov](https://twitter.com/aarondjents) has joined the Jest team full time to improve our unit and integration test infrastructure for Facebook's ads products. For the next few months the Jest team is planning major improvements in these areas:
 
 - **Replace Jasmine:** Jasmine is slowing us down and is not being very actively developed. We started replacing all the Jasmine matchers and are excited to add new features and drop this dependency.
 - **Code Coverage:** When Jest was originally created, tools such as babel didn't exist. Our code coverage support has a bunch of edge cases and isn't always working properly. We are rewriting it to address all the current problems with coverage.