fix：修改登录页左上角平台为logo

@@ -46,7 +46,7 @@
     },
     },
   ]);
   ]);
   const getLogo = computed(() => {
   const getLogo = computed(() => {
-    return userStore.platInfo?.background;
+    return userStore.platInfo?.logo;
   });
   });
   const getTitle = computed(() => {
   const getTitle = computed(() => {
     // 设置icon
     // 设置icon