With the PR introduced in , flink documentation is upgraded to Hugo instead of Jekyll. However, we fail to update the NOTICE file. 
The jQuery, bootstrap dependencies are not used anymore and AnchorJS JS library path should also be updated.
In addition, bootstrap version 3.3.4 is known to have security vulnerabilities. See link . This could cause legal approval rejection while adopting Apache Flink. (I am facing such a issue.)
I can create a pull request to fix this. Please assign the task to me.