Add deepseek doc.

[aooxin]

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

Others

PR changes

Docs

Description

Add deepseek doc.

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.08%. Comparing base (8e4ff07) to head (f5bae25).
Report is 30 commits behind head on develop.

❌ Your project check has failed because the head coverage (51.08%) is below the target coverage (58.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9961      +/-   ##
===========================================
- Coverage    51.41%   51.08%   -0.34%     
===========================================
  Files          745      745              
  Lines       118351   119274     +923     
===========================================
+ Hits         60856    60927      +71     
- Misses       57495    58347     +852     

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