Update directory.json

[biazzotto]

Update Garoa Hacker Clube.

[s3lph]

Hi!

Thanks for the update. There's some minor improvements you could make to your endpoint:

• We recently released v15 of the SpaceAPI schema. Since your endpoint would already be compliant with v15, you'd only need to add a "15" to the api_compatibility list to claim support for it.
• Your endpoint does not set a CORS header, which prevents it from being used in web-based clients. Fixing this is as simple as adding the header Access-Control-Allow-Origin: * to your HTTP response.