Updated contents

Author: eleev

Data Structures.playground/contents.xcplayground

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<playground version='6.0' target-platform='ios' display-mode='rendered'>
+<playground version='6.0' target-platform='ios' display-mode='raw'>
     <pages>
         <page name='Main'/>
         <page name='Stack'/>