fix: activity问题bug修复

src/views/component/fileTraining/index.vue

@@ -107,7 +107,7 @@
                           </div>
                         </template>
                         <!-- 附件 -->
-                        <div v-if="aactivity.zhen_fu_jian_">
+                        <div v-if="activity.zhen_fu_jian_">
                           <ibps-attachment
                             v-model="activity.zhen_fu_jian_"
                             allow-download