Anyone is welcome to make PRs for editorial changes to the specification. These include typo fixes, rewordings, or any other changes that don't affect the meaning of the spec.
To submit normative changes, however, you will need to be a WinterTC delegate or invited expert. See here for more information.
WinterTC specifications are developed using Bikeshed.
If you have Python 3.9 or higher on your system, you can install Bikeshed with:
pip3 install bikeshedFor other ways of installing it, see the Bikeshed documentation.
Then, you can build the specification using:
bikeshed spec index.bs index.htmlYou might also find the bikeshed watch and bikeshed serve commands useful.