message: Update example with link to ToneEvent
diff: <body>
  <tone-example label="Events">
  <div slot="explanation">
  - Tone's Event classes (<a href="https://tonejs.github.io/docs/Event">Tone.Event</a>,
  + Tone's Event classes (<a href="https://tonejs.github.io/docs/ToneEvent">Tone.ToneEvent</a>,
  <a href="https://tonejs.github.io/docs/Loop">Tone.Loop</a>,
  <a href="https://tonejs.github.io/docs/Part">Tone.Part</a> and
  <a href="https://tonejs.github.io/docs/Sequence">Tone.Sequence</a>)
  <a href="https://tonejs.github.io/docs/Transport.schedule">Transport.schedule</a> or
  <a href="https://tonejs.github.io/docs/Transport.scheduleRepeat">scheduleRepeat</a>
  and lets you create precise, rhythmic events which are startable, stoppable and loopable.
  + (note that ToneEvent was called <a href="https://tonejs.github.io/docs/Event">Event</a> before Tone.js 14.x)
  </div>
  <div id="content">
  