Merge #585

585: Update enableDarkMode to auto in playground r=bidoubiwa a=mdubus

## Problem

`enableDarkMode` is still in `true`, causing the dark mode to be displayed even if the system is in light mode.

## Solution

Set `enableDarkMode` to `auto` to let the system decide which theme to display

Co-authored-by: Morgane Dubus <[email protected]>

Author: meili-bors[bot]

playgrounds/html/index.html

@@ -34,7 +34,7 @@
       },
       debug: true, // Set debug to true if you want to inspect the dropdown
       enhancedSearchInput: true,
-      enableDarkMode: true
+      enableDarkMode: 'auto'
     })
   </script>
   <style>