add test image exactly like the electricity image that is working to test

Author: MateoVanDamme

docs/infra/cnc.md

@@ -73,7 +73,7 @@ Out of scope I think? Me (1T) and Elvis can help you get started probably though
 ![moving the CNC machine](./images/cnc_3-movement.png)
 
 
-![why are these images not loading](./images/elec1.jpeg)
+![elec1](./images/elec1.jpeg)
 
 
 </div>