docs: update llms.txt list [skip ci]

Author: github-actions[bot]

README.md

@@ -52,7 +52,10 @@ A curated list of LLM-powered tools and resources with llms.txt implementation.
 ### 💻 developer tools
 
 - ![Docker Docs favicon](https://www.google.com/s2/favicons?domain=docs.docker.com&size=128) **[Docker Docs](https://docs.docker.com)** - Official Docker library of resources, manuals, and guides to help you containerize applications. <sub>[llms.txt](https://docs.docker.com/llms.txt)</sub>
+- ![Expo Documentation favicon](https://www.google.com/s2/favicons?domain=docs.expo.dev&size=128) **[Expo Documentation](https://docs.expo.dev)** - Build one JavaScript/TypeScript project that runs natively on all your users' devices. <sub>[llms.txt](https://docs.expo.dev/llms.txt) • [llms-full.txt](https://docs.expo.dev/llms-full.txt)</sub>
 - ![Medusa favicon](https://www.google.com/s2/favicons?domain=medusajs.com&size=128) **[Medusa](https://medusajs.com/)** - A digital commerce platform with a built-in framework for customizations. <sub>[llms.txt](https://docs.medusajs.com/llms.txt) • [llms-full.txt](https://docs.medusajs.com/llms-full.txt)</sub>
+- ![Pydantic favicon](https://www.google.com/s2/favicons?domain=docs.pydantic.dev&size=128) **[Pydantic](https://docs.pydantic.dev/latest/)** - Pydantic is the most widely used data validation library for Python. <sub>[llms.txt](https://docs.pydantic.dev/latest/llms.txt) • [llms-full.txt](https://docs.pydantic.dev/latest/llms-full.txt)</sub>
+- ![Tamagui favicon](https://www.google.com/s2/favicons?domain=tamagui.dev&size=128) **[Tamagui](https://tamagui.dev)** - React style library and UI kit that unifies React Native and React web. <sub>[llms.txt](https://tamagui.dev/llms.txt)</sub>
 
 <!-- LLMS-LIST:END -->