fix：修改pc端首页右上帮助文档跳转

@@ -204,19 +204,23 @@
       const helpDoc = ref([
         {
           title: '如何接入设备?',
-          href: '',
+          href: 'https://docs.thingskit.com/',
+          target: '_blank ',
         },
         {
           title: '什么是设备配置?',
-          href: '',
+          href: 'https://docs.thingskit.com/',
+          target: '_blank ',
         },
         {
           title: '云组态模板如何使用?',
-          href: '',
+          href: 'https://docs.thingskit.com/',
+          target: '_blank ',
         },
         {
           title: '查看全部>>',
-          href: '',
+          href: 'https://docs.thingskit.com/',
+          target: '_blank ',
         },
       ]);
       const activeKey = ref('tab1');