What is the issue with the HTML Standard?

The README refers to information on how to build HTML output from the source file so contributors can preview their changes locally. However, the README doesn’t provide a direct link or specific commands for building the spec.

Suggested improvement:

Add build steps or a short section explaining how to run the build process

Or provide a direct link to the build instructions inside CONTRIBUTING.md

This will help new contributors set up the local development workflow more easily.

Thank you!