message: docs: fix `rejects.toMatch` on `rejects.toThrow`
diff: @@ -120,7 +120,7 @@ test('the data is peanut butter', async () => {
  test('the fetch fails with an error', async () => {
  expect.assertions(1);
  - await expect(fetchData()).rejects.toMatch('error');
  + await expect(fetchData()).rejects.toThrow('error');
  });
  ```
  