style: rename 'Meus Funis' to 'Gerenciar Funis'

- Updated sidebar navigation and page title to accurately reflect the management nature of the funnels page.

pages/Funnels.tsx

@@ -160,7 +160,7 @@ export const Funnels: React.FC = () => {
       {/* Sidebar: Funnels List */}
       <div className="w-full md:w-64 shrink-0 space-y-4">
         <div className="flex items-center justify-between">
-          <h2 className="text-lg font-bold text-zinc-900 dark:text-zinc-50">Meus Funis</h2>
+          <h2 className="text-lg font-bold text-zinc-900 dark:text-zinc-50">Gerenciar Funis</h2>
           <button onClick={() => setIsFunnelModalOpen(true)} className="p-1.5 bg-zinc-100 dark:bg-dark-bg text-zinc-600 dark:text-dark-muted rounded-lg hover:bg-zinc-200 dark:hover:bg-dark-border transition-colors">
             <Plus size={16} />
           </button>