Fix the outdated link of google's java style guide
Closes
@@ -42,6 +42,6 @@ Code cannot even be evaluated without this step.
[CLA]: https://cla.developers.google.com
[forking]: https://help.github.com/articles/fork-a-repo
-[java style guide]: http://google-styleguide.googlecode.com/svn/trunk/javaguide.html
+[java style guide]: https://google.github.io/styleguide/javaguide.html
[well-formed commit messages]: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
[pull request]: https://help.github.com/articles/creating-a-pull-request
