fix(console): add pretty format for 'last woken' time (#529)

Use consistent pretty format for 'last woken' time in task view.

This is the same pretty format that is used for all the other durations
across the Tokio Console UI.

Closes: #524

tokio-console/src/view/task.rs

@@ -204,8 +204,9 @@ impl TaskView {
         if let Some(since) = task.since_wake(now) {
             wakeups.reserve(3);
             wakeups.push(Span::raw(", "));
-            wakeups.push(bold("last woken:"));
-            wakeups.push(Span::from(format!(" {:?} ago", since)));
+            wakeups.push(bold("last woken: "));
+            wakeups.push(styles.time_units(since, view::DUR_LIST_PRECISION, None));
+            wakeups.push(Span::raw(" ago"));
         }
 
         waker_stats.push(Spans::from(wakeups));