Recommend lines between side SPA links on page

Issue in /src/pages/before-implement/privacy/cmp-privacy-and-general-data-protection-regulation.md

Steps to Reproduce:
1. Go to https://developer-stage.adobe.com/target/before-implement/privacy/cmp-privacy-and-general-data-protection-regulation/#what-response-does-target-send-to-the-gdpr-api-for-an-access-request
2. Observe that the side links are very close together

Expected Behavior: The lack of space makes these more difficult to separate and read. It would be a better customer experience to add a line between them.

Start with /src/pages/before-implement/privacy/cmp-privacy-and-general-data-protection-regulation.md and inspect the content associated with the reported anchor and side links. Preview the page at the supplied URL and confirm that the side links have enough separation to be read as distinct items.

Written by the indexing model from the issue text.