fix light/dark mode tooltip in the wiki (yairm210#11087)

Author: ofetios

Diff for: mkdocs.yml

@@ -10,13 +10,13 @@ theme:
       accent: amber
       toggle:
         icon: material/lightbulb
-        name: Switch to light mode
+        name: Switch to dark mode
     - scheme: slate
       primary: teal
       accent: amber
       toggle:
         icon: material/lightbulb-outline
-        name: Switch to dark mode
+        name: Switch to light mode
 
   icon:
     repo: fontawesome/brands/github