Implement code changes to enhance functionality and improve performance

Author: Karanjot786

README.md

@@ -2,7 +2,7 @@
 
 Welcome to the **DSA Code Repository**! This is a comprehensive collection of **Data Structures and Algorithms** implementations in multiple programming languages, organized specifically for **Hacktoberfest 2025** contributions.
 
-![HacktoberFest 2025](https://media.dev.to/cdn-cgi/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fmuni0707qyw76apl5ax8.png)
+![Hacktoberfest 2025](./assets/HF2025-EmailHeader.png)
 
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