Fixes wrong link on Protected paths settings

What does this MR do?

Fixes wrong link on Protected paths settings.

Anchor link was changed on the documentation MR !16540 (merged).

This MR fixes the link to use the correct one.

Related to #29952 (closed)

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