Updated README headings.

README.md

@@ -11,7 +11,7 @@ visiting our website to practice all 101 problems. Engaging with these problems
 going to reinforce your learning, and better prepare you for high‐stakes coding interviews:\
 https://bit.ly/run-code
 
-## Contributing to the Repo
+## 🌟 Contributing to the Repo
 We welcome contributions to the repository! Of course, your contributions will be credited. If you’d like to add solutions in a language of your choice, or amend an existing solution in any language, please read the instructions provided in [CONTRIBUTING.md](CONTRIBUTING.md).
 
 Huge thanks and appreciation to everyone who has helped build this repository from the ground up: