message: ci(docs-infra): increase waiting time to reduce flakiness on CI
  Example failure:
  PR Close
diff: @@ -25,8 +25,8 @@ describe('Attribute directives', () => {
  greenRb.click();
  browser.actions().mouseMove(highlightedEle).perform();
  - // Wait for up to 2s for the background color to be updated,
  + // Wait for up to 4s for the background color to be updated,
  // to account for slow environments (e.g. CI).
  - browser.wait(() => highlightedEle.getCssValue('background-color').then(c => c === lightGreen), 2000);
  + browser.wait(() => highlightedEle.getCssValue('background-color').then(c => c === lightGreen), 4000);
  });
  });
  