Update README.md by removing an image

Removed an image and adjusted the layout in the README.

Author: schollz

README.md

@@ -89,13 +89,10 @@ the source code is located in the [core folder](https://github.com/schollz/_core
 
 ### ectocore software
 
-<img width="1387" height="766" alt="image" src="https://github.com/user-attachments/assets/d6ed7a61-9209-484d-9bda-7c965382a7b3" />
-
-
 The ectocore.rocks sample loading tool can be used offline by following the instructions for your system.
 
 <div align="center">
-<img src=""https://github.com/user-attachments/assets/e500c153-89f0-4326-b91d-fc5af104f05d" width="50%">
+<img src=""https://github.com/user-attachments/assets/d6ed7a61-9209-484d-9bda-7c965382a7b3" width="50%">
 </div>
 
 <details><summary>Windows</summary>