bug fixes

src/modules/viewer/index.vue

@@ -8,7 +8,7 @@
         </router-link>
         <h1 class="course-viewer-main-hd__title">{{ detail.course_name }}</h1>
         <!-- 直播的时候显示帮助按钮 -->
-        <template v-if="!isLive">
+        <template v-if="isLive">
           <router-link to="/app/feedback/feedback-create" target="_blank">
             <el-tooltip effect="light" :content="$t('viewerMain.feedback')">
               <i class="el-icon-self-fankuiyijian"></i>