Fix empty diff adjust table

frontend/src/app/components/difficulty-adjustments-table/difficulty-adjustments-table.component.html

@@ -1,5 +1,5 @@
-<div>
-  <table class="table latest-transactions" style="min-height: 295px">
+<div style="min-height: 295px">
+  <table class="table latest-transactions">
     <thead>
       <tr>
         <th class="d-none d-md-block" i18n="block.height">Height</th>