fix: 隐藏使用手册

src/components/layout/Main.vue

@@ -23,7 +23,7 @@ const dialogVisible = ref(false)
       </div>
     </div>
   </section>
-  <div class="manual-btn" @click="dialogVisible = true">
+  <div class="manual-btn" @click="dialogVisible = true" v-if="false">
     <img src="/center_resource/course.png" />
   </div>
   <el-dialog v-model="dialogVisible" title="使用手册" width="852px">