Merge pull request #351 from huggingface/pcuenca-patch-1

Add Sergio

Author: burtenshaw

units/en/unit0/introduction.mdx

@@ -147,6 +147,15 @@ Thomas is a machine learning engineer at Hugging Face and delivered the successf
 - [Follow Thomas on X](https://x.com/ThomasSimonini)
 - [Follow Thomas on Linkedin](https://www.linkedin.com/in/simoninithomas/)
 
+
+### Sergio Paniego
+
+As an enthusiastic community member, Sergio contributed several sections to Units 2 and 3, and lots of smaller PRs and reviews. Thank you, Sergio! 🙌
+
+- [Follow Sergio on Hugging Face](https://huggingface.co/sergiopaniego)
+- [Follow Sergio on X](https://x.com/sergiopaniego)
+- [Follow Sergio on Linkedin](https://www.linkedin.com/in/sergio-paniego-blanco/)
+
 ## Acknowledgments
 
 We would like to extend our gratitude to the following individuals for their invaluable contributions to this course: