docs: Add factory quick guide to sitemap
BRANCH=none
TEST=View Markdown in gitiles
Tested-by: Tom Hughes
* [EC Acronyms and Technologies](./ec_terms.md)
## EC Bringup
+
* [New Board Checklist](./new_board_checklist.md)
## Case Closed Debugging (CCD)
* [FPMCU Debugging](./fingerprint/fingerprint-debugging.md)
* [Fingerprint Authentication Design Doc](./fingerprint/fingerprint-authentication-design-doc.md)
* [Fingerprint Factory Requirements](./fingerprint/fingerprint-factory-requirements.md)
+* [Fingerprint Quick Factory Guide](./fingerprint/fingerprint-factory-quick-guide.md)
## Testing
