Update README.md for documention

[ZHUI]

Before submitting

• Lint code. If there are lint issues, please format the code first.

# Install and register `pre-commit` in the project folder
pip install pre-commit && pre-commit install

# Process previous code files separately
pre-commit run --file XXXX.py

• Add test cases into tests folder. If there are codecov issues, please add tests cases first.

PR types

PR changes

Description

[paddle-bot]

Thanks for your contribution!

[CLAassistant]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.65%. Comparing base (1afb9b2) to head (72831bc).
Report is 11 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9785      +/-   ##
===========================================
+ Coverage    51.78%   52.65%   +0.87%     
===========================================
  Files          734      730       -4     
  Lines       117217   115267    -1950     
===========================================
- Hits         60701    60696       -5     
+ Misses       56516    54571    -1945     

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