fix: add async keyword to getInitialBoardAsync function

apps/nextjs/src/app/[locale]/boards/(content)/[name]/(board)/_definition.tsx

@@ -7,5 +7,5 @@ import { createBoardContentPage } from "../../_creator";
 const getBoardByNameAsync = cache((name: string) => api.board.getBoardByName({ name }));
 
 export default createBoardContentPage<{ locale: string; name: string }>({
-  getInitialBoardAsync: ({ name }) => getBoardByNameAsync(name),
+  getInitialBoardAsync: async ({ name }) => getBoardByNameAsync(name),
 });