fix: clear header for v2 modal

apps/nextjs/src/components/layout/v2-beta-announcement/constants.ts

@@ -1,5 +1,5 @@
 export const v2BetaBlogUrl = "https://v2.preview.homarr.dev/blog/2026/09/03/homarr-2.0";
-export const v2BetaDocsUrl = "https://v2.preview.homarr.dev/docs";
+export const v2BetaDocsUrl = "https://v2.preview.homarr.dev/docs/getting-started/";
 export const v2BetaPreviewUrl = "https://app-v2.preview.homarr.dev";
 export const v2BetaWorkshopUrl = "https://v2.preview.homarr.dev/workshop";
 export const v2BetaFeedbackUrl = "https://github.com/homarr-labs/homarr/issues/new?template=v2_beta_feedback.yml";

apps/nextjs/src/components/layout/v2-beta-announcement/v2-beta-announcement.tsx

@@ -292,7 +292,7 @@ const V2BetaAnnouncementModal = createModal<V2BetaAnnouncementModalProps>(({ inn
 }).withOptions({
   defaultTitle: "Homarr v2 beta",
   size: 1000,
-  centered: true,
+  yOffset: 128,
   zIndex: getDefaultZIndex("modal") + 2,
 });