Added cosmetical detail to image sharing

gui/README.md

@@ -146,6 +146,7 @@ You can then verify that by listing your images:
 openstack image list | grep <image_ID>
 ```
 **Unshare shared image**
+
 As owner of the shared image, you can check all projects that have access to the shared image by following command:
 ```
 openstack image member list <image_ID>