Fix jest-dom link

Author: afontcu

README.md

@@ -122,8 +122,8 @@ test('increments value on click', async () => {
 })
 ```
 
-> You might want to install [jest-dom][jest-dom] to add handy assertions such as
-> `.toBeInTheDocument()`:
+> You might want to install [`jest-dom`][jest-dom] to add handy assertions such
+> as `.toBeInTheDocument()`. In the example above, you could write
 > `expect(screen.queryByText('Times clicked: 0')).toBeInTheDocument()`.
 
 > Using `byText` queries it's not the only nor the best way to query for