seconds in stats

ui/home/Stats.tsx

@@ -77,7 +77,7 @@ const Stats = () => {
           <StatsItem
             icon={ clockIcon }
             title="Average block time"
-            value={ `${ (data.average_block_time / 1000).toFixed(1) } s` }
+            value={ `${ (data.average_block_time / 1000).toFixed(1) }s` }
             isLoading={ isPlaceholderData }
           />
         ) }