Environment details

n/a

Steps to reproduce

1. Open the README.md file for the BigQuery Data Transfer Service: https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-bigquery-datatransfer/README.md

2. Click the link whose text is "the CHANGELOG".

   GitHub 404s, because the link points to the root of the repo, where there is no CHANGELOG.md file: https://github.com/googleapis/google-cloud-node/blob/main/CHANGELOG.md

   The link should point to the package directory instead: https://github.com/googleapis/google-cloud-node/blob/main/packages/google-cloud-bigquery-datatransfer/CHANGELOG.md

3. Repeat steps 1 and 2 for IAM; you should get another 404: https://github.com/googleapis/google-cloud-node/blob/main/packages/google-iam/README.md