doc: clarify when http emits aborted event

Author: ronag

doc/api/http.md

@@ -318,6 +318,10 @@ Until the data is consumed, the `'end'` event will not fire. Also, until
 the data is read it will consume memory that can eventually lead to a
 'process out of memory' error.
 
+Unlike the `request` object, if the response closes prematurely, the
+`response` object does not emit an `'error'` but instead emits the
+`'aborted'` event.
+
 Node.js does not check whether Content-Length and the length of the
 body which has been transmitted are equal or not.