Add "Adobe Commerce Security Scan Tool FAQ" to the same level as "help/systems/security-scan.md"

[Nayanika16024]

Adobe Commerce Security Scan Tool FAQ in the commerce-knowledge-base.en repository should move to the same level as Security scan.

Once it moves to its new location, I'll archive help/faq/general/magento-security-scan-tool-faq.md and add a redirect.

[jeff-matthews]

@Nayanika16024,

Instead of publishing the FAQ as-is, we decided that it would be better to incorporate the info into the existing security scan documentation. See 025ac52 for details. The content is no live on production and you can proceed with the redirect.