Update introduction.md

docs.it4i/dgx2/introduction.md

@@ -43,7 +43,7 @@ The DGX-2 is designed to be a powerful server in its own right.
 On the storage side the DGX-2 comes with 30TB of NVMe-based solid state storage. 
 For clustering or further inter-system communications, it also offers InfiniBand and 100GigE connectivity, up to eight of them.
 
-![](../img/dgx2-nvlink.png =640x)
+![](../img/dgx2-nvlink.png){ width=50% }
 
 The new NVSwitches means that the PCIe lanes of the CPUs can be redirected elsewhere, most notably towards storage and networking connectivity.