Fix navigation link to the dashboard

app/ui/dashboard/sidenav.tsx

@@ -17,7 +17,7 @@ export default function SideNav() {
     <div className="flex h-full flex-col px-3 py-4 md:px-2">
       <Link
         className="mb-2 flex h-20 items-center justify-start rounded-md bg-blue-600 p-4 md:h-20"
-        href="/dashboard/guests"
+        href={`/${getSlug()}/dashboard`}
       >
         <div className={`${gloriaHallelujah.className} "w-32 text-white md:w-40 antialiased`}>
           <h1>Wedding Planner</h1>