Add trailing commas

ShortcutsSwift.playgroundbook/Contents/Chapters/Chapter1.playgroundchapter/Pages/Page1.playgroundpage/Contents.swift

@@ -7,7 +7,7 @@ let shortcut = buildShortcut([
         showResult("Your battery is at \(batteryLevel)%, you might want to charge it."),
     ], ifFalse: (
         showResult("Your battery is at \(batteryLevel)%, you're probably fine for now.")
-    ))
+    )),
 ])
 
 shareShortcut(shortcut, named: "Warn for Low Battery Level")

ShortcutsSwift.playgroundbook/Contents/Chapters/Chapter1.playgroundchapter/Pages/Page2.playgroundpage/Contents.swift

@@ -6,7 +6,7 @@ let shortcut = buildShortcut([
     chooseFromMenu(items: [
         ("Share", share()),
         ("Copy to Clipboard", copyToClipboard()),
-    ])
+    ]),
 ])
 
 shareShortcut(shortcut, named: "Clap Along")