修改 启动本地PageAbility 示例 代码里面json对象格式

Signed-off-by: Nc00532779 <cuibin9@huawei.com>

zh-cn/application-dev/ability/fa-pageability.md

@@ -80,8 +80,7 @@ ability支持单实例和多实例两种启动模式。
 ```javascript
   import featureAbility from '@ohos.ability.featureAbility'
   featureAbility.startAbility({
-  want:
-  {
+      want: {
           action: "",
           entities: [""],
           type: "",
@@ -90,9 +89,8 @@ ability支持单实例和多实例两种启动模式。
           /* FA模型中abilityName由package + Ability name组成 */
           abilityName: "com.example.entry.secondAbility",
           uri: ""
-  },
-  },
-  );
+      }
+  });
 ```
 
 ### 启动远程PageAbility（当前仅对系统应用开放）