Fix tooltip text alignment in mining dashboard

frontend/src/app/components/hashrate-chart/hashrate-chart.component.ts

@@ -145,6 +145,7 @@ export class HashrateChartComponent implements OnInit {
         shadowColor: 'rgba(0, 0, 0, 0.5)',
         textStyle: {
           color: '#b1b1b1',
+          align: 'left',
         },
         borderColor: '#000',
         formatter: function (data) {

frontend/src/app/components/pool-ranking/pool-ranking.component.ts

@@ -176,7 +176,10 @@ export class PoolRankingComponent implements OnInit {
         }
       },
       tooltip: {
-        trigger: 'item'
+        trigger: 'item',
+        textStyle: {
+          align: 'left',
+        }
       },
       series: [
         {