fix: storybook brand dropdown

Author: Stephanie Zeng

apps/demo/.storybook/preview.ts

@@ -13,11 +13,11 @@ const preview: Preview = {
     brands: {
       name: "Brands",
       description: "Design System Supported Brands",
-      defaultValue: "Brand 1",
+      defaultValue: "brand-1",
       toolbar: {
         title: "Brands",
         icon: "paintbrush",
-        defaultValue: "brand-1",
+        defaultValue: "brand 1",
         items: ["brand-1", "hot-brand"],
         dynamicTitle: true,
       },