The "Games made with Arcade" link in the README is broken

[pushfoo]

Ty to SeeEmilyPlay for reporting the issue on the Arcade Discord.

Replication Steps

1. Go to https://github.com/pythonarcade/arcade
2. Scroll down until you see "Arcade is built on top of pyglet and OpenGL. See Games Made with Arcade for example game jam entries and more."
3. Click Games Made with Arcade
4. Observe a File not found page

Proposed Resolution

1. Open README.md on a local fork or GitHub web editor
2. Navigate to this line:

   arcade/README.md

   Line 14 in 8a41838

   [Games Made with Arcade]: https://api.arcade.academy/en/latest/sample_games.html

3. Replace the URL on this line so it points to https://api.arcade.academy/en/latest/community/games/index.html