Remove name argument from aws_db_instance documentation

[justinretzolk]

Description

In version 5.0.0, the name argument was removed from the aws_db_instance resource, however, the argument was not removed from the documentation. This PR corrects that.

Relations

Closes #31818

References

Relates: #31232
Relevant release notes line

Output from Acceptance Testing

n/a, docs

[github-actions]

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[ewbankkit]

LGTM 🚀.

[github-actions]

This functionality has been released in v5.2.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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