Spaced out code a bit more on the shift challenge

seed/challenges/basic-javascript.json

@@ -620,6 +620,7 @@
         "var myRemoved = myArray; // This should be [\"John\"] and myArray should now be [23, [\"dog\", 3]]",
         "",
         "// Only change code above this line.",
+        "",
         "// We use this function to show you the value of your variable in your output box.",
         "// You'll learn about functions soon.",
         "(function(y, z){return('myArray = ' + JSON.stringify(y) + ' & myRemoved = ' + JSON.stringify(z));})(myArray, myRemoved);"