cleanup

I don't think all the under-the-hood details are necessary here.

Author: pwseg

src/connections/functions/source-functions.md

@@ -435,6 +435,6 @@ No. Tracking Pixels operate client-side only and need to be loaded onto your web
 
 The test function interface has a 4KB console logging limit. Outputs surpassing this limit will not be visible in the user interface.
 
-#### Can I send a custom response out from my Source Function to an external tool?
+#### Can I send a custom response from my Source Function to an external tool?
 
-No, at this time Source Functions do not allow for custom responses to be sent to the tool that made a request to the Function's webhook. This is because of the way Functions leverage AWS Lambda on the backend. Functions will either respond with a success or failure response and cannot emit a custom response.
+No, Source Functions can't send custom responses to the tool that triggered the Function's webhook. Source Functions can only send a success or failure response, not a custom one.