Update README.md

Author: Jamie-Chang

README.md

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 # better-functools
+[![PyPI - Version](https://img.shields.io/pypi/v/better-functools)](https://pypi.org/p/better-functools)
+[![pydantic.run](https://img.shields.io/badge/Sandbox-1e293b?logo=pydantic)](https://pydantic.run/store/a075fad4d27ad9d0)
+[![Static Badge](https://img.shields.io/badge/Documentaion-blue)](https://jamie-chang.github.io/better-functools/)
+
 Better functools improves functional programming ergonomics in Python
 
 ## Installation