修改例句报错问题。

src/components/Adult/preview/components/WordPhraseDetail.vue

@@ -126,7 +126,7 @@
                   :class="[lijuIndex == 3 ? 'sele' : '']"
                 >
                   <span>本套例句</span>
-                  <span>{{ list.length }}</span>
+                  <span>{{ list3.length }}</span>
                 </div>
               </div>
               <!-- <div class="right">