style: fix key style

HCRC-178

Author: nikomakela

src/core/pageContent/sidebarContent/SidebarCardsList.tsx

@@ -28,9 +28,9 @@ export default function SidebarCardsList({ cards }: CardsListItemProps) {
             internalHrefOrigins,
             getIsHrefExternal,
           );
-          const key =
-            'sidebar-card-' +
-            Buffer.from(`${card.title}-${uri}`).toString('base64');
+          const key = `sidebar-card-${Buffer.from(
+            `${card.title}-${uri}`,
+          ).toString('base64')}`;
           return (
             <SimpleCard
               key={key}