Update README.md

Author: ansantam

README.md

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 # Tutorial on basic reinforcement learning concepts
 
-<!-- [![DOI](https://zenodo.org/badge/759758400.svg)](https://zenodo.org/doi/10.5281/zenodo.10792272)
-[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0) -->
+[![DOI](https://zenodo.org/badge/759758400.svg)](https://doi.org/10.5281/zenodo.12649046)
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 
 - [Download the repository](#download-the-repository)
 - [Getting started](#getting-started)