docs(table): fix example and change iframe title

I was looking at the [this](https://h6s.dev/docs/table/example), I checked that the table example code was wrong
<img width="1471" alt="스크린샷 2022-07-27 오전 10 22 10" src="https://user-images.githubusercontent.com/16166356/181139941-5bbed6c9-a949-4bd7-9c3f-afd67e36205c.png">

