fix(docs): align Storybook inventory and design documentation

.storybook/manager.js

@@ -87,6 +87,7 @@ const koreanLabels = {
   'patterns-data-filter-bar': '필터 바',
   'patterns-layout': '화면 구성',
   'patterns-layout-gnb': '전체 메뉴 (GNB)',
+  'patterns-layout-dashboard': '대시보드',
   'patterns-layout-lnb': '좌측 메뉴 (LNB)',
   'patterns-layout-dashboard-layout': '대시보드',
   'patterns-layout-page-header': '페이지 헤더',