完善transitionend示例界面提示

pages.json

@@ -1006,7 +1006,7 @@
       "path" : "pages/component/transition-event/transition-event",
       "style" : 
       {
-        "navigationBarTitleText" : "",
+        "navigationBarTitleText" : "transitionend事件",
         "enablePullDownRefresh" : false
       }
     }

pages/component/transition-event/transition-event.uvue

 <template>
   <!-- #ifdef APP -->
-  <scroll-view style="flex:1">
+  <scroll-view style="flex:1;padding: 10px;">
   <!-- #endif -->
     <button @click="switchBtn">{{buttonValue}}</button>
     <image class="transition-transform" id="transition-transform" @transitionend="onEnd" src="/static/uni.png"></image>
+    <text>对图片设置transform进行旋转，在旋转完成的transitionend事件后，继续旋转</text>
   <!-- #ifdef APP -->
   </scroll-view>
   <!-- #endif -->