Update Dependency List documentation link

What does this MR do?

Fixes the "Learn more" link on the Dependency List page.

Tracked by #13718 (closed).

The Dependency List recently gained a dedicated documentation page. This MR updates the "Learn more" link of the Dependency List view to point to that new documentation.

As it was, the anchor on the previous link was broken, although the linked page about Dependency Scanning does have an entry about the Dependency List.

So, previously, it pointed to /help/user/application_security/dependency_scanning/index#dependency-list. Now, it points to /help/user/application_security/dependency_list/index.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Performance and Testing

• [-] Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers