fix: border color of dark mode

src/data/products.ts

@@ -6,7 +6,7 @@ export interface Product {
   titleKey: string;
   descriptionKey: string;
   LogoComponent: FC;
-  demoLink: string;
+  demoLink: string | null;
 }
 
 export const productsData: Product[] = [
@@ -15,7 +15,7 @@ export const productsData: Product[] = [
     titleKey: 'products.harmonyClub.title',
     descriptionKey: 'products.harmonyClub.description',
     LogoComponent: Logo, // Reference the component
-    demoLink: '', // FIXME: update this url
+    demoLink: null, // FIXME: update this url
   },
   // add more products here
 ];