feat: add image understanding.

README.md

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 本Python SDK库帮助用户更快体验讯飞星火大模型
 
 
 ## 项目地址
 
-* Github: [https://github.com/iflytek/spark-ai-python](https://github.com/iflytek/spark-ai-python)
-
-* 欢迎点赞
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+* Github: [https://github.com/iflytek/spark-ai-python](https://github.com/iflytek/spark-ai-python) 欢迎点赞 [Star]()
 
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 ## 前言