Update README.md

[Yanjia0]

add model apis promo
img is uploading to public_asset repo

📌 Checklist before creating the PR

• I have created an issue for this PR for traceability
• The title follows the standard format: [doc/gemini/tensor/...]: A concise description
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🚨 Issue number

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📝 What does this PR do?

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💥 Checklist before requesting a review

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• I have added thorough tests.
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