update incompatible code excerpt (testing-library#591)

pdcribeiro · web-flow · commit bd799de4dbdc · 2020-10-01T11:47:34.000-07:00
diff --git a/docs/react-testing-library/example-intro.md b/docs/react-testing-library/example-intro.md
@@ -131,11 +131,10 @@ test('handlers server error', async () => {
 
 ### Arrange
 
-The [`render`](./api#render) method renders a React element into the DOM and
-returns utility functions for testing the component.
+The [`render`](./api#render) method renders a React element into the DOM.
 
 ```jsx
-const { container, asFragment } = render(<Fetch url="/greeting" />)
+render(<Fetch url="/greeting" />)
 ```
 
 ### Act
