Update Background-Workers.md

[WenTao25]

Description

Resolves #xxxx (write the related issue number if available)

TODO: Describe what this PR has changed, add screenshot or animated GIF if available, write if it is a breaking change, and how to fix the breaking changes for existing applications if so.

Checklist

• I fully tested it as developer / designer and created unit / integration tests
• I documented it (or no need to document or I will create a separate documentation issue)

How to test it?

Please describe how this can be tested by the test engineers if it is not already explicit - or remove this section if no need to description.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ realLiangshiwei
❌ WenTao25
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[realLiangshiwei]

Thanks @WenTao25 , please sign the Contributor License Agreement

[realLiangshiwei]

#19232