fix(Dashboard): fixed Map stroke opacity

Author: shoudaos

src/pages/Visits/components/Map/Map.vue

@@ -79,6 +79,8 @@ export default {
     let hs = polygonTemplate.states.create("hover");
     hs.properties.fillOpacity = 0.5;
 
+    polygonTemplate.strokeOpacity = 0.4;
+
     let citySeries = map.series.push(new am4maps.MapImageSeries());
     citySeries.data = cities;
     citySeries.dataFields.value = "size";