Documentation for schema format doesn't describe commonTypes

[thoughtpolice]

The photo sharing app example on the playground website[1] immediately uses commonTypes in its schema, but this is nowhere to be found in the actual documentation on the website[2]. The usage is pretty obvious but this would be great to document.

• [1] https://www.cedarpolicy.com/en/playground
• [2] https://docs.cedarpolicy.com/schema.html

[andrewmwells-amazon]

Thanks for pointing this out. We'll update the docs.

[khieta]

Added in ed47b6b

[thoughtpolice]

Thanks for the fix and the great project!

[khieta]

Let us know if you spot any other issues 😄