doc: update FAQ.md to include smoke test reproduction

[sxa]

Extra information that could be useful for replication which was identified as part of adoptium/temurin-build#4099

Checklist

• commit message has one of the standard prefixes
• faq.md updated if appropriate
• other documentation is changed or added (if applicable)
• playbook changes run through VPC or QPC (if you have access)
• VPC/QPC not applicable for this PR
• for inventory.yml changes, bastillion/nagios/jenkins updated accordingly

[karianna]

I think the sentence structure can be inverted here so there's less () style of cavaeting.

[sxa]

Note: Force push above is to fix the typo in the commit message. There have been no additional changes made since Martijn gave his approval.