chore: fix previous bad commit for code owners

In order to stack code owners, you need to have them inlined.

CODEOWNERS

@@ -1,7 +1,7 @@
-frontend/ @ScuffleTV/frontend
+* @ScuffleTV/maintainers
 
-video/ @ScuffleTV/video
+frontend/ @ScuffleTV/frontend @ScuffleTV/maintainers
 
-backend/ @ScuffleTV/backend
+video/ @ScuffleTV/video @ScuffleTV/maintainers
 
-* @ScuffleTV/maintainers
+backend/ @ScuffleTV/backend @ScuffleTV/maintainers