Update README.md

Author: pratiktech28

README.md

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 [![Integration Test CI](https://github.com/pratiktech28/gprmax_integration_test/actions/workflows/integration.yml/badge.svg)](https://github.com/pratiktech28/gprmax_integration_test/actions/workflows/integration.yml)
 
-<img width="412" height="225" alt="download" src="https://github.com/user-attachments/assets/0191f5d7-407a-4217-b9c4-023a624c7d1d" />       <img width="307" height="164" alt="download" src="https://github.com/user-attachments/assets/9471e9ea-94be-45db-adcd-1a98038b717a" />    
+<img width="600" height="73" alt="download" src="https://github.com/user-attachments/assets/360e9f50-d042-4e28-8bb0-b789c82444b8" />                    <img width="307" height="164" alt="download" src="https://github.com/user-attachments/assets/9471e9ea-94be-45db-adcd-1a98038b717a" />    
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 ![download](https://github.com/user-attachments/assets/fe13b6ac-7631-4a8f-afe9-45c6aae90ab1)