增加模块注释，默认web页面不展示标题

@@ -31,7 +31,7 @@ struct DefaultWebPage {
     Column() {
     Column() {
       WdWebComponent({
       WdWebComponent({
         webUrl: this.url,
         webUrl: this.url,
-        backVisibility: true,
+        backVisibility: false,
         reload: this.reload
         reload: this.reload
       })
       })
     }
     }

@@ -2,7 +2,7 @@
   "string": [
   "string": [
     {
     {
       "name": "shared_desc",
       "name": "shared_desc",
-      "value": "description"
+      "value": "JSBridge是Native(Harmony/Android/iOS)和H5(JavaScript)之间的桥梁,它构建双向通信通道,可以让【Native调用H5】以及让【H5调用Native】,使两者可交互数据。"
     }
     }
   ]
   ]
 }
 }

@@ -2,7 +2,7 @@
   "string": [
   "string": [
     {
     {
       "name": "shared_desc",
       "name": "shared_desc",
-      "value": "description"
+      "value": "页面路由,实现不同页面之间的跳转和数据传递"
     }
     }
   ]
   ]
 }
 }

@@ -2,7 +2,7 @@
   "string": [
   "string": [
     {
     {
       "name": "shared_desc",
       "name": "shared_desc",
-      "value": "description"
+      "value": "可以与Native(Harmony)互相调用及传递数据的自定义H5展示页面"
     }
     }
   ]
   ]
 }
 }