feat(github): fix readme file content

[xuexihuang]

🔍 What type of PR is this?

👀 What this PR does / why we need it:

• [ ] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [ ] I have updated the documentation as required
• [ ] All the tests have passed

🅰 Which issue(s) this PR fixes:

Fixes #37

📝 Special notes for your reviewer:

🎯 Describe how to verify it

📑 Additional documentation e.g., RFC, notion, Google docs, usage docs, etc.:

[pull-request-size[bot]]

Whoa! Easy there, Partner!

This PR is too big. Please break it up into smaller PRs.

[kubbot]

CLA Assistant Lite bot: 💕 Thank you for your contribution and please kindly read and sign our 🎯https://github.com/openim-sigs/cla/blob/main/README.md.
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I have read the CLA Document and I hereby sign the CLA

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1 out of 2 committers have signed the CLA.
:white_check_mark: (cubxxw)[https://github.com/cubxxw]
:x: @lin.huang
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[github-actions[bot]]

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[sweep-ai[bot]]

Apply Sweep Rules to your PR?

• [ ] Apply: All new business logic should have corresponding unit tests.
• [ ] Apply: Refactor large functions to be more modular.
• [ ] Apply: Add docstrings to all functions and file headers.

[xuexihuang]

I have read the CLA Document and I hereby sign the CLA

[cubxxw]

recheck

[xuexihuang]

I have read the CLA Document and I hereby sign the CLA

[github-actions[bot]]

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