A couple months ago, GHA announced the workflow_dispatch event. This new event treats manually triggered workflows as first-class citizens. It can be triggered via the UI, eliminating the requirement for cumbersome CLI commands that repository_dispatch requires.

Now, it's not this repo's responsibility for showing people the ropes around GHA, but as long as it is in the business of making recommendations in the README, this'd be a nice update to make.

Happy to make a PR for it if people think the change would be useful