mark up voting icons

src/app/components/shared/comment/comment.component.scss

@@ -13,6 +13,7 @@ mat-card-content > :first-child {
   width: 35px;
   height: 35px;
   font-size: 35px;
+  font-weight: bold;
   line-height: 100% !important;
   color: var(--on-surface)
 }