Remove unnecessary empty line in code example

Author: koendehondt

Chapters/DynamicPresenter/DynamicPresenter.md

@@ -33,7 +33,6 @@ Now, without closing the window, we can dynamically edit the layout of the main
 button1 := presenter newButton.
 button1 label: 'I am a button'.
 presenter layout add: button1.
-
 ```