README: just use an HTTPS link for cover image

vincentbernat · Aug 10, 2015 · c69bb7b · c69bb7b
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commit c69bb7b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -28,7 +28,7 @@ A live installation, reset every hour, is publicly available:
 
 Here is a demonstration video:
 
-[![Dashkiosk demo](//img.youtube.com/vi/Vb4BvEzoYOU/0.jpg)](https://www.youtube.com/watch?v=Vb4BvEzoYOU "Dashkiosk demo")
+[![Dashkiosk demo](https://img.youtube.com/vi/Vb4BvEzoYOU/0.jpg)](https://www.youtube.com/watch?v=Vb4BvEzoYOU "Dashkiosk demo")
 
 # Development