docs: add error demo to en docs

[yutingzhao1991]

[中文版模板 / Chinese template]

💡 Background and solution

英文文档缺少一个 demo

🔗 Related issue link

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Name	Status	Preview	Comments	Updated (UTC)
ant-design-web3	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 11, 2024 3:50am

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⚠️ No Changeset found

Latest commit: 36dcf90

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (215d03c) to head (36dcf90).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #866   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          707       707           
  Lines        21365     21365           
  Branches      1198      1198           
=========================================
  Hits         21365     21365           

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