Update README.md

Author: honghoangsts

demo/MatterJSDemo/README.md

@@ -1,6 +1,6 @@
-# React Native Rolley Ball Game Demo 🎮
+# React Native Ball Game Demo 🎮
 
-Welcome to the Rolley Ball Game Demo built with React Native, React Game Engine, and Matter.js! This engaging demo showcases the integration of these powerful technologies to create a fun and interactive gaming experience.
+Welcome to the Ball Game Demo built with React Native, React Game Engine, and Matter.js! This engaging demo showcases the integration of these powerful technologies to create a fun and interactive gaming experience.
 
 **Video Demo**
 
@@ -31,4 +31,4 @@ Explore the code, experiment with modifications, and use this demo as a foundati
 - [React Game Engine Documentation](https://reactnative.dev/docs/getting-started)
 - [Matter.js Documentation](https://brm.io/matter-js/docs/)
 
-Feel free to reach out to the community for any questions or share your enhancements to this demo. Happy gaming! 🎉
+Feel free to reach out to the community for any questions or share your enhancements to this demo. Happy gaming! 🎉