Update codeowners file (#13)

* Update codeowners file

* Update CODEOWNERS

---------

Co-authored-by: Phillipp Glanz <6745190+TheMeinerLP@users.noreply.github.com>

Author: theEvilReaper

.github/CODEOWNERS

@@ -1,2 +1,3 @@
-* @OneLiteFeatherNET/vulpes-maintainers
-/.github/CODEOWNERS @OneLiteFeatherNET/core-team
+* @OneLiteFeatherNET/vulpes-maintainer
+/.github/CODEOWNERS @OneLiteFeatherNET/core-team
+/.github/CODEOWNERS @OneLiteFeatherNET/vulpes-maintainer