Fix README formatting issue at EOF

Removed an unnecessary newline at the end of the README file. This update ensures consistency in formatting and adheres to best practices for markdown files.

Author: Hillary520

README.md

@@ -110,4 +110,4 @@ pytest tests/ --cov=python_system_monitor
 ## About
 
 This project was created to provide a modern, efficient system monitoring solution with a focus on performance and user experience.
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