replaced image source with urls (for pypi on display)

Author: mhubii

README.md

@@ -14,8 +14,8 @@ Eye-to-hand calibration from RGB-D images using robot mesh as calibration target
             <th align="left" width="50%">Registered</th>
         </tr>
         <tr>
-            <td align="center"><img src="doc/img//hydra_robust_icp_unregistered.png" alt="Unregistered Mesh and Point Cloud"></td>
-            <td align="center"><img src="doc/img//hydra_robust_icp_registered.png" alt="Registered Mesh and Point Cloud"></td>
+            <td align="center"><img src="https://raw.githubusercontent.com/lbr-stack/roboreg/refs/heads/main/doc/img/hydra_robust_icp_unregistered.png" alt="Unregistered Mesh and Point Cloud"></td>
+            <td align="center"><img src="https://raw.githubusercontent.com/lbr-stack/roboreg/refs/heads/main/doc/img/hydra_robust_icp_registered.png" alt="Registered Mesh and Point Cloud"></td>
         </tr>
     </table>
 </body>