Block prediction -> Block health - Fix wrong chart download name

frontend/src/app/graphs/graphs.routing.module.ts

@@ -1,6 +1,6 @@
 import { NgModule } from '@angular/core';
 import { RouterModule, Routes } from '@angular/router';
-import { BlockPredictionGraphComponent } from '../components/block-prediction-graph/block-prediction-graph.component';
+import { BlockHealthGraphComponent } from '../components/block-health-graph/block-health-graph.component';
 import { BlockFeeRatesGraphComponent } from '../components/block-fee-rates-graph/block-fee-rates-graph.component';
 import { BlockFeesGraphComponent } from '../components/block-fees-graph/block-fees-graph.component';
 import { BlockRewardsGraphComponent } from '../components/block-rewards-graph/block-rewards-graph.component';
@@ -143,9 +143,9 @@ const routes: Routes = [
             redirectTo: 'mempool',
           },
           {
-            path: 'mining/block-prediction',
+            path: 'mining/block-health',
             data: { networks: ['bitcoin'] },
-            component: BlockPredictionGraphComponent,
+            component: BlockHealthGraphComponent,
           },
         ]
       },