fix

spec/Section 7 -- Response.md

@@ -12,8 +12,8 @@ the case that any _field error_ was raised on a field and was replaced with
 
 A response to a GraphQL request must be a map or a stream of incrementally
 delivered results. The response will be a stream of incrementally delivered
-results when the GraphQL service has acted on `@defer` or `@stream` directives
-when executing the operation. When the response of the GraphQL operation
+results when the GraphQL service has deferred or streamed data as a result of
+the `@defer` or `@stream` directives. When the response of the GraphQL operation
 contains incrementally delivered results, the first value will be an initial
 payload, followed by one or more subsequent payloads.