docs(en): add example for using timeZoneOffset

Author: xchopin

docs/en/faq.md

@@ -4,10 +4,11 @@
 MongoDB [stores times in UTC by default](https://docs.mongodb.com/manual/reference/bson-types/#document-bson-type-date), and will convert any local time representations into this form.
 Applications that must operate or report on some unmodified local time value may store the time zone alongside the UTC timestamp, and compute the original local time in their application logic.
 
-#### Example for reconstructing the original local time by applying the saved offset:
-From the MongoDB shell
+#### For reconstructing the original local time you will have to apply the saved offset:
+>  **⚠ Note** <br>
+TimeZoneOffSet is saved in seconds.
 
 ```javascript
 var record = db.getCollection("riskScore").findOne()
-print(new Date(record.dateTime.getTime() + (record.timeZoneOffset)) )
+var localTime = new Date(record.dateTime.getTime() + record.timeZoneOffset)
 ```