Add empty sections export to docs page

Author: steida

apps/web/src/app/(docs)/docs/page.mdx

@@ -4,6 +4,8 @@ export const metadata = {
     "Learn how to use Evolu, whether you're building with the library or the local-first platform.",
 };
 
+export const sections = [];
+
 # Documentation
 
 Evolu is both a **TypeScript library** and a **local-first platform**. Choose your path below.