feat: add documentLinks for resource and data types

[msvechla]

auto-generates document links for registry.terraform.io based on naming conventions.

closes #190

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
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[hashicorp-cla-app]

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[sylr]

Hi @msvechla, thank you for working on this.

I am wondering if you could include the version of the provider in the documentation url ? e.g.:

https://registry.terraform.io/providers/hashicorp/aws/6.7.0/docs/data-sources/instance

Cheers.

[oleksiivelychko]

Is there any news on when this PR might be merged?