Update docs

docs/usage/advanced-hooks.md

@@ -40,19 +40,35 @@ import { renderHook, act } from '@testing-library/react-hooks'
 import { CounterStepProvider, useCounter } from './counter'
 
 test('should use custom step when incrementing', () => {
-  const wrapper = ({ children }) => <CounterStepProvider step={2}>{children}</CounterStepProvider>
-  const { result } = renderHook(() => useCounter(), { wrapper })
+  const wrapper = ({ children, step }) => (
+    <CounterStepProvider step={step}>{children}</CounterStepProvider>
+  )
+  const { result, rerender } = renderHook(() => useCounter(), {
+    wrapper,
+    initialProps: {
+      step: 2
+    }
+  })
 
   act(() => {
     result.current.increment()
   })
 
   expect(result.current.count).toBe(2)
+
+  rerender({ step: -2 })
+
+  act(() => {
+    result.current.increment()
+  })
+
+  expect(result.current.count).toBe(0)
 })
 ```
 
-The `wrapper` option will accept any React component, but it **must** render `children` in order for
-the test component to render and the hook to execute.
+The `wrapper` option will accept any React component and access the `initialProps` option and new
+props from `rerender` method as its properties, but it **must** render `children` in order for the
+test component to render and the hook to execute.
 
 ### ESLint Warning