Link up to Flappy Bird Tutorial?

At Coder Dojo Brighton we've created a few Pygame Zero tutorials using the Mu editor. These are tried and tested over the past few years with 8+ year olds and work well. They are slow paced and relatively easy to follow.

Would you be willing to add a few to the resources/tutorials page here?
https://pygame-zero.readthedocs.io/en/latest/resources.html

I think this is probably the best one for beginners:
https://pygamezero-bird.readthedocs.io/en/latest/

Then we also have:
https://pygamezero-burgers.readthedocs.io/en/latest/
https://pygamezero-candy.readthedocs.io/en/latest/
https://pygamezero-pacman.readthedocs.io/en/latest/

If you agree I'm happy to create a pull request.

Start with the resources/tutorials page at https://pygame-zero.readthedocs.io/en/latest/resources.html and review how existing tutorial links are listed. Add the suggested Flappy Bird, Burgers, Candy, and Pacman tutorials, then verify that each link appears correctly and reaches its tutorial.

Written by the indexing model from the issue text.