📝 docs: Fix typo in README (lobehub#4366)

Corrected "Lean more" to "Learn more" in [README.md].

This pull request addresses a minor typo found in repository. The typo has been corrected to improve clarity and maintain the quality of the documentation.

This change is purely cosmetic and does not affect functionality.

README.md

@@ -152,7 +152,7 @@ We have implemented support for the following model service providers:
 - **Moonshot AI (Dark Side of the Moon)**: Integrated with the Moonshot series models, an innovative AI startup from China, aiming to provide deeper conversation understanding. [Learn more](https://www.moonshot.cn/)
 - **Minimax**: Integrated the Minimax models, including the MoE model **abab6**, offers a broader range of choices. [Learn more](https://www.minimaxi.com/)
 - **DeepSeek**: Integrated with the DeepSeek series models, an innovative AI startup from China, The product has been designed to provide a model that balances performance with price. [Learn more](https://www.deepseek.com/)
-- **Qwen**: Integrated the Qwen series models, including the latest **qwen-turbo**, **qwen-plus** and **qwen-max**. [Lean more](https://help.aliyun.com/zh/dashscope/developer-reference/model-introduction)
+- **Qwen**: Integrated the Qwen series models, including the latest **qwen-turbo**, **qwen-plus** and **qwen-max**. [Learn more](https://help.aliyun.com/zh/dashscope/developer-reference/model-introduction)
 - **Novita AI**: Access **Llama**, **Mistral**, and other leading open-source models at cheapest prices. Engage in uncensored role-play, spark creative discussions, and foster unrestricted innovation. **Pay For What You Use.** [Learn more](https://novita.ai/llm-api?utm_source=lobechat&utm_medium=ch&utm_campaign=api)
 
 At the same time, we are also planning to support more model service providers, such as Replicate and Perplexity, to further enrich our service provider library. If you would like LobeChat to support your favorite service provider, feel free to join our [community discussion](https://github.com/lobehub/lobe-chat/discussions/1284).