added rel=0

Author: TomJaeger

docs/pro/entry_cloning.md

@@ -13,7 +13,7 @@ Entry Cloning makes it possible to clone existing entries when ExpressionEngine
 
 Check out our video tutorial on Cloning Entries!
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+<iframe src="https://www.youtube.com/embed/cSz7NZdQvGk?vq=HD1080&rel=0" width="1920" height="1080" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
 
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