Update README.md

Author: amirallami-code

README.md

@@ -3,7 +3,7 @@
 ![Binary Search Demo](images/demo.jpg)
 
 [![MIT License](https://img.shields.io/badge/License-MIT-blue)](https://opensource.org/licenses/MIT)
-![Last Update](https://img.shields.io/github/last-commit/amirallami-code/binary-search-algorithm?style=flat&color=blue)
+![Last Update](https://img.shields.io/github/last-commit/amirallami-code/binary-search-algorithm?style=flat&color=yellow)
 [![Stars](https://img.shields.io/github/stars/amirallami-code/binary-search-algorithm?style=flat&color=yellow)](https://github.com/amirallami-code/binary-search-algorithm/)
 ![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen)
 ![Contributions Welcome](https://img.shields.io/badge/Contributions-welcome-brightgreen)