Fix interpolation bug in complex computed list of data sources

[jooohn]

Interpolation of ComplexComputedList for TerraformDataSources should starts with data. prefix.

[hashicorp-cla]

All committers have signed the CLA.

[skorfmann]

Thanks for your contribution, very appreciated. It looks good at a first glance. Could you provide a pointer to the provider schema and the resource where you encountered this issue?

[jooohn]

@skorfmann

I've encountered this issue when tried this data source attribute.

https://www.terraform.io/docs/providers/aws/d/organizations_organization.html#roots

[anubhavmishra]

@skorfmann should be good to merge?

[skorfmann]

@jooohn thanks again for your contribution. You can use it via cdktf@next until there's a proper release.

[jooohn]

thank you for approving this!

[github-actions]

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