Noted that Help Scout cannot receive custom properties (#3059)

* Noted that Help Scout cannot receive custom properties

* Apply suggestions from code review

Co-authored-by: stayseesong <[email protected]>

Co-authored-by: stayseesong <[email protected]>

Author: markzegarelli

src/connections/destinations/catalog/help-scout/index.md

@@ -30,4 +30,7 @@ If you're not familiar with the Segment Specs, take a look to understand what th
 
 You can use the Identify call to create or update customers in your Help Scout account.
 
-A `name` and an `email` are required by Help Scout to complete the request. You can set the userId as the `email`, although this is [not recommended](/docs/connections/spec/identify/#user-id). You can also specify `firstName` and `lastName` traits instead of a single `name` trait. You can learn more about which properties Help Scout will accept [here](https://developer.helpscout.com/mailbox-api/endpoints/customers/create/).
+Help Scout requires a `name` and an `email` to complete the request. You can set the userId as the `email`, although this is [not recommended](/docs/connections/spec/identify/#user-id). You can also specify `firstName` and `lastName` traits instead of a single `name` trait. You can learn more about which properties Help Scout accepts [here](https://developer.helpscout.com/mailbox-api/endpoints/customers/create/){:target="_blank"}.
+
+> info ""
+> This destination doesn't allow you to send custom properties to Help Scout. Use [Destination Functions](/docs/connections/functions/destination-functions/#create-a-destination-function) to send any non-standard properties to Help Scout.