Update README.md

README.md

@@ -9,13 +9,13 @@ This project investigates using robot primitives to create drawings in the style
 
 ## Videos
 
-[![](/images/fig_9)](https://youtu.be/h9NoDtw8VmM "Root multiline following")
+[![](/images/fig_9.jpg)](https://youtu.be/h9NoDtw8VmM "Root multiline following")
 
 
-[![](/images/fig_4)](https://youtu.be/L276xcI_x-w "Root painter test circle")
+[![](/images/fig_4.jpg)](https://youtu.be/L276xcI_x-w "Root painter test circle")
 
 
-[![](/images/fig_5)](https://youtu.be/RIbZDw12SdM "Root within perimeter")
+[![](/images/fig_5.jpg)](https://youtu.be/RIbZDw12SdM "Root within perimeter")
          
 
 ### Remember for use