Match default color theme to system preferences

Signed-off-by: Federico Busetti <729029+febus982@users.noreply.github.com>

Author: febus982

mkdocs.yml

@@ -21,13 +21,15 @@ theme:
   palette:
     # Palette toggle for light mode
     - scheme: default
+      media: "(prefers-color-scheme: light)"
       primary: teal
       toggle:
         icon: material/brightness-7
         name: Switch to dark mode
 
     # Palette toggle for dark mode
     - scheme: slate
+      media: "(prefers-color-scheme: dark)"
       primary: teal
       toggle:
         icon: material/brightness-4