Reword OpenRAL summary tagline

README.md

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   https://cdn-uploads.huggingface.co/production/uploads/679bec571de528e679aae409/KR7hrL_kADf-oPybj7Q0C.png
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-OpenRAL is to physical robots what LangGraph + Hugging Face is to LLMs — an open-source, typed, layered runtime for composing Vision-Language-Action models and classical controllers into deployable robot agents.
+An open-source operating layer for embodied AI, OpenRAL unifies fast policies, slow reasoning, and classical control into one typed, traceable, safety-first runtime for deployable robot agents.
 
 **Links:** [GitHub](https://github.com/OpenRAL/openral) · [Docs](https://openral.github.io/openral/) · [Discord](https://discord.gg/ZU5XGfTJYe)