chore(bedrock): correct README now that L1 constructs are available

[clareliguori]

Reason for this change

Bedrock now supports CloudFormation resource types, and as of #29911 we now have L1 constructs for CDK.

Description of changes

README previously stated that Bedrock was not available in CloudFormation.
I updated that to point people to Construct Hub and to the L1 constructs.

Description of how you validated changes

N/A

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

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Pull request has been modified.

[paulhcsun]

@Mergifyio update

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update

✅ Branch has been successfully updated

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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: acaaf6f
• Result: SUCCEEDED
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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).