Update api-events.mdx (#1096)

Author: caffeine-storm

docs/dom-testing-library/api-events.mdx

@@ -135,9 +135,8 @@ fireEvent(
 ## Using Jest Function Mocks
 
 [Jest's Mock functions](https://jestjs.io/docs/en/mock-functions) can be used to
-test that a callback passed to the function was called, or what it was called
-when the event that **should** trigger the callback function does trigger the
-bound callback.
+test that a component will call its bound callback in response to a particular
+event. 
 
   <Tabs
     defaultValue="react"