chore: Update README.md

[neverbiasu]

Unified the format and improved some expressions.

Summary by Sourcery

Update README.md to standardize code block syntax and improve expressions for better clarity.

Documentation:

• Unified the format of the README.md file by standardizing code block syntax and improving expressions for clarity.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This pull request focuses on improving the readability and consistency of the README.md file. The changes include unifying the format, adding markdown syntax for code blocks and lists, and providing additional instructions for downloading models via command line. Bash syntax highlighting has been added to code blocks to enhance readability.

File-Level Changes

Files	Changes
README.md	Unified the format and improved expressions for better readability and consistency. Added bash syntax highlighting to code blocks and provided additional instructions for downloading models via command line.

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