[🐛BUG] Minor Typo on Atomic Files Page

[tszumowski]

Describe the bug I wasn't sure where or what repository this HTML is generated in. But there is a minor typo in https://recbole.io/atomic_files.html. Under ml-1m.item, it says user_id:token. I believe that should say item_id:token

To Reproduce Go to https://recbole.io/atomic_files.html

Expected behavior See description

Screenshots

Colab Links If applicable, add links to Colab or other Jupyter laboratory platforms that can reproduce the bug.

Desktop (please complete the following information):

• OS: [e.g. Linux, macOS or Windows]
  • RecBole Version [e.g. 0.1.0]
• Python Version [e.g. 3.79]
  • PyTorch Version [e.g. 1.60]
  • cudatoolkit Version [e.g. 9.2, none]

[chenyushuo]

Thanks for your corrections. We have fix this problem in our website pages.