Update index.md

Author: MultiArrayQueue

index.md

@@ -9,7 +9,7 @@ but only the first one (with initialCapacity) is allocated up-front.
 A detailed description is given in [Paper](Paper_MultiArrayQueue.pdf).
 Performance figures are in the Paper as well.
 
-![Diagram_MultiArrayQueue](Diagram_MultiArrayQueue.png)
+<img src="Diagram_MultiArrayQueue.png" height="600">
 
 ### Interactive Simulator