readme update date fix

Author: ryichando

README.md

@@ -51,7 +51,7 @@ Published in [ACM Transactions on Graphics (TOG)](https://dl.acm.org/doi/abs/10.
 
 ## 📝 Change History
 
-- (2025.1.8) Updated the [trapped example](./examples/trapped.ipynb) [[Video]](https://drive.google.com/file/d/13qX3QVA7gcjgDPydG2N5dvltK2GZZDby/view) with squishy balls.
+- (2025.2.7) Updated the [trapped example](./examples/trapped.ipynb) [[Video]](https://drive.google.com/file/d/13qX3QVA7gcjgDPydG2N5dvltK2GZZDby/view) with squishy balls.
 - (2025.1.8) Added a [domino example](./examples/domino.ipynb) [[Video]](https://drive.google.com/file/d/1N9y8eZrjSQhAUhKwiO9w8jW_T18zPnYf/view).
 - (2025.1.5) Added a [single twist example](./examples/twist.ipynb) [[Video]](https://drive.google.com/file/d/1LDFKS-iBvl2uDdPVKaazQL25tYGEEyXr/view).
 - (2024.12.31) Added full documentation for Python APIs, parameters, and log files [[GitHub Pages]](https://st-tech.github.io/ppf-contact-solver).