🌐 Add Chinese translation for docs/zh/docs/advanced/testing-websockets.md

[jaystone776]

As title

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (cf73051) 100.00% compared to head (1c27101) 100.00%.
Report is 1086 commits behind head on master.

❗ Current head 1c27101 differs from pull request most recent head 9deff8e. Consider uploading reports for the commit 9deff8e to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##            master     #3817     +/-   ##
===========================================
  Coverage   100.00%   100.00%             
===========================================
  Files          540       410    -130     
  Lines        13969     10281   -3688     
===========================================
- Hits         13969     10281   -3688     

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[github-actions]

📝 Docs preview for commit 1c27101 at: https://612ee15fdcecba2ea64c105e--fastapi.netlify.app

[tiangolo]

📝 Docs preview for commit 9deff8e at: https://649a091facd72b094261eae9--fastapi.netlify.app

[alejsdev]

Thanks for your help @jaystone776 😸

And thanks for your review @zy7y 🪄