update path of playlab shownotes images

Author: tanyaparker

dashboard/config/locales/slides.en.yml

@@ -340,13 +340,13 @@ en:
         text: "A lot of simple shapes can be used to create more complex patterns. In the next puzzle, the code you recently wrote to make a circle is available to you as a new function that can make circles of different sizes. Can you use it to help Elsa create intricate and beautiful patterns in the snow?"
     C3_playlab_create_game:
       1:
-        image: 'playlab_1.png'
+        image: 'notes/playlab_1.png'
         text: "So far you've been making an animation or a story that does the exact same thing every time you run it. Now you can make an interactive game that you can actually play."
       2:
-        image: 'playlab_2.png'
+        image: 'notes/playlab_2.png'
         text: "There's the \"when arrow\" block and the \"move actor\" block. You can put these blocks together to move the actors around with the arrow keys."
       3:
-        image: 'playlab_3.png'
+        image: 'notes/playlab_3.png'
         text: "And there are some blocks that do stuff when actors collide or are clicked. Check them out and have fun!"