Standards import url: remove www

[Erin007]

Follow up to #33149

I don't know why or how to figure out why, but the link for standards metadata from curriculum builder without www works (e.g. https://curriculum.code.org/metadata/coursea-2019/standards.json), but the link with it does not (e.g. https://www.curriculum.code.org/metadata/coursea-2019/standards.json). I removed www so that I can import standards from curriculum builder.

[bethanyaconnor]

Tried it out locally and it works! I'm not convinced you need curriculum.code.org in the CSP anymore (it worked locally without it) because it's all the same domain but I'm not sure

[wjordan]

I don't know why or how to figure out why, but the link for standards metadata from curriculum builder without www works [curriculum.code.org], but the link with it does not [www.curriculum.code.org].

Just answering this question- the www link doesn't work because there is no DNS record for www.curriculum.code.org, only one for curriculum.code.org. This can be verified via the AWS Route53 service which maintains DNS records for the code.org domain (either via API or through the AWS Management Console).