fix: update HTML title to mockupAWS

- Change generic 'frontend' title to 'mockupAWS - AWS Cost Simulator'
- Resolves frontend branding issue identified in testing

frontend/src/pages/Dashboard.tsx

@@ -2,7 +2,7 @@ import { useScenarios } from '@/hooks/useScenarios';
 import { Activity, DollarSign, Server, AlertTriangle, TrendingUp } from 'lucide-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/components/ui/card';
 import { CostBreakdownChart } from '@/components/charts';
-import { formatCurrency, formatNumber } from '@/components/charts/ChartContainer';
+import { formatCurrency, formatNumber } from '@/components/charts/chart-utils';
 import { Skeleton } from '@/components/ui/skeleton';
 import { Link } from 'react-router-dom';