chore: Update README screenshots to single row

Author: LeanBitLab

README.md

@@ -35,8 +35,6 @@ This fork adds **optional AI-powered features** using Gemini, Groq, and OpenAI-c
     <td><img src="docs/images/1.png" height="500" alt="Screenshot 1"/></td>
     <td><img src="docs/images/2.png" height="500" alt="Screenshot 2"/></td>
     <td><img src="docs/images/3.png" height="500" alt="Screenshot 3"/></td>
-  </tr>
-  <tr>
     <td><img src="docs/images/4.png" height="500" alt="Screenshot 4"/></td>
     <td><img src="docs/images/5.png" height="500" alt="Screenshot 5"/></td>
     <td><img src="docs/images/6.png" height="500" alt="Screenshot 6"/></td>