app download url 使用后台配置

src/components/MainLayout/MainLayout.vue

@@ -8,7 +8,7 @@
             <TabPane label="下载安卓apk">
               <div class="qm-primary-text flex-center">
                 <qrcode
-                  value="https://d.zqapps.com/qfns"
+                  :value="appDownloadUrl"
                   :options="{ width: 200 }"
                 ></qrcode>
               </div>