fix: device back page cannot be displayed

src/views/device/back/index.vue

@@ -43,7 +43,7 @@
             :device="item"
           >
             <div class="o-video__tag" />
-            <div class="c-footer u-ellipsis">{{ device.name }}</div>
+            <div class="c-footer u-ellipsis">{{ item.name }}</div>
           </device-player>
         </div>
         <pagination