chore: bump markdown e2e test wait period

Author: yyx990803

packages/vue/examples/__tests__/markdown.spec.ts

@@ -18,7 +18,7 @@ describe('e2e: markdown', () => {
     await page().type('textarea', '\n## foo\n\n- bar\n- baz')
     // assert the output is not updated yet because of debounce
     expect(await html('#editor div')).toBe('<h1 id="hello">hello</h1>\n')
-    await page().waitFor(100)
+    await page().waitFor(200)
     expect(await html('#editor div')).toBe(
       '<h1 id="hello">hello</h1>\n' +
         '<h2 id="foo">foo</h2>\n' +