Fixup #17505
[skip sauce]
### Running documentation locally
-1. Run through the [tooling setup](https://github.com/twbs/bootstrap/blob/master/docs/getting-started/build-tools#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
+1. Run through the [tooling setup](https://github.com/twbs/bootstrap/blob/v4-dev/docs/getting-started/build-tools.md#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
2. From the root `/bootstrap` directory, run `bundle exec jekyll serve` in the command line.
3. Open <http://localhost:9001> in your browser, and voilĂ .