Fix theme entry

Author: joethei

community-css-themes.json

@@ -2878,7 +2878,8 @@
     "name": "Dedication 2",
     "author": "Phemelo Modiga",
     "repo": "modigaphemelo/Dedication-2-Obsidian-Theme",
-    "screenshot": "Dark.png"
+    "screenshot": "Dark.png",
+    "modes": ["dark", "light"]
   },
   {
     "name": "Hydra Pressure",