Update README.md

Author: anashoussaini

kinova_link6/README.md

@@ -14,7 +14,7 @@ Link6](https://www.kinovarobotics.com/product/link6-robots) developed by [Kinova
 
 
 <p float="left">
-  <img src="assets/link6.png" width="400">
+  <img src="assets/link6.png" width="800">
 </p>