message: chore(indicators): optimize examples
diff: <img class="scroll-content" :src="dinnerLink" />
  </div>
  <div class="scroll-indicator-wrapper" ref="indicatorWrapper">
  - <div class="scroll-indicator-handle"></div>
  <img class="scroll-indicator-bg" :src="dinnerLink">
  + <div class="scroll-indicator-handle"></div>
  </div>
  </div>
  </template>
  @@ -33,7 +33,9 @@ export default {
  bounce: false,
  indicators: [
  {
  - relationElement: this.$refs.indicatorWrapper
  + relationElement: this.$refs.indicatorWrapper,
  + // choose div.scroll-indicator-handle as indicatorHandle
  + relationElementHandleElementIndex: 1
  }
  ]
  })
  