feat: set map to cartocdn

src/routes/+page.svelte

@@ -14,9 +14,10 @@
 
 		const map = L.map('map').setView([centerLat, centerLon], 13);
 
-		L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
-			maxZoom: 19,
-			attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
+		L.tileLayer(`https://basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png`, {
+			attribution:
+				'&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors &copy; <a href="https://carto.com/attributions">CARTO</a>',
+			maxZoom: 20
 		}).addTo(map);
 
 		lignes.features.forEach((feature) => {