Add Folium Badge to README.md

Folium is a Python library useful for creating interactive geographical visualizations. You can use it to plot and manipulate maps directly in your Python code.

README.md

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 | <img src="https://img.shields.io/badge/Dart-0175C2?style=for-the-badge&logo=dart&logoColor=white" />                       | `https://img.shields.io/badge/Dart-0175C2?style=for-the-badge&logo=dart&logoColor=white`                    |
 | <img src="https://img.shields.io/badge/Delphi-B22222?style=for-the-badge&logo=delphi&logoColor=white" />                   | `https://img.shields.io/badge/Delphi-B22222?style=for-the-badge&logo=delphi&logoColor=white`                |
 | <img src="https://img.shields.io/badge/Erlang-A90533?style=for-the-badge&logo=erlang&logoColor=white" />                   | `https://img.shields.io/badge/Erlang-A90533?style=for-the-badge&logo=erlang&logoColor=white`                |
-| <img src="https://img.shields.io/badge/Folium-77B829?style=for-the-badge&logo=folium&logoColor=white" />                   | `https://img.shields.io/badge/Erlang-A90533?style=for-the-badge&logo=erlang&logoColor=white`                |
+| <img src="https://img.shields.io/badge/Folium-77B829?style=for-the-badge&logo=folium&logoColor=white" />                   | `https://img.shields.io/badge/Folium-77B829?style=for-the-badge&logo=folium&logoColor=white`                |
 | <img src="https://img.shields.io/badge/Go-00ADD8?style=for-the-badge&logo=go&logoColor=white" />                           | `https://img.shields.io/badge/Go-00ADD8?style=for-the-badge&logo=go&logoColor=white`                        |
 | <img src="https://img.shields.io/badge/Haskell-5D4F85?style=for-the-badge&logo=haskell&logoColor=white" />                 | `https://img.shields.io/badge/Haskell-5D4F85?style=for-the-badge&logo=haskell&logoColor=white`              |
 | <img src="https://img.shields.io/badge/Haxe-EA8220?style=for-the-badge&logo=haxe&logoColor=FFF&labelColor=EA8220" />       | `https://img.shields.io/badge/Haxe-EA8220?style=for-the-badge&logo=haxe&logoColor=FFF&labelColor=EA8220`    |