(aws-certificatemanager): Typo name in packages with hyphen (-)

### Describe the issue

Some TypeScript packages with `-` seems to be changed to `_` on the public documentation

Example:
`aws-certificatemanager` --> `aws_certificatemanager`
`aws-apigatewayv2` --> `aws_apigatewayv2`
`aws-xray` --> `aws_xray`

Source: https://github.com/aws/aws-cdk/tree/main/packages/aws-cdk-lib

Copy incorrect package name from the doc gave me error `Cannot find module 'aws-cdk-lib/aws_certificatemanager' or its corresponding type declarations.`

### Links

https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_certificatemanager.CertificateValidation.html