Update playwright/README.md

playwright/README.md

@@ -30,10 +30,13 @@ async def Page(browser='chromium', headless=True):
         
     return await context.new_page()
 
-if __name__ == "__main__":
+async def main():
     page = await Page()
     await page.goto('https://naver.com')
     await page.screenshot(path='screenshot.png')
+
+if __name__ == "__main__":
+    asyncio.run(main())
 ```
 
 ```python