### Your checklist for a pull request to sitespeed.io
Please review the [guidelines for contributing](CONTRIBUTING.md) to this repository.

- [ ] I'm making a big change or adding functionality so I've already opened an issue proposing the change to other contributors, so I got feedback on the idea before took the time to write precious code
- [ ] Check that your change/fix has corresponding unit tests (if applicable)
- [ ] Squash commits so it looks sane
- [ ] Update the documentation https://github.com/sitespeedio/sitespeed.io/tree/master/docs in another PR
- [ ] Verify that the test works by running `npm test` and test linting by `npm run lint`


### Description
Please describe your pull request and tell us the fix #

Thank you for making sitespeed.io even better!
