Docs: minor changes (#8814)

* minor

* add image

* PR feedback

* npm run format:fix of course 4_4

* Remove what is not relevant

* pr feedback

* PR feedback

* revert npm run format

* Update docs/docs/FAQ.mdx

Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>

* Update FAQ.mdx

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>
Co-authored-by: Ben McCann <322311+benmccann@users.noreply.github.com>

docs/docs/guides/database-queries.md

@@ -86,3 +86,9 @@ SELECT "key", "value" FROM "system_config";
 ```
 
 (Only used when not using the [config file](/docs/install/config-file))
+
+## Persons
+
+```sql title="Delete person and unset it for the faces it was associated with"
+DELETE FROM person WHERE name = 'PersonNameHere';
+```