fix featureAbility doc issue

Signed-off-by: Nraul <laoyitong@huawei.com>
Change-Id: Idb2b8fd00dd787b8ac9ddba3a73356b671593f9f

zh-cn/application-dev/reference/apis/js-apis-featureAbility.md

@@ -49,6 +49,9 @@ featureAbility.startAbility(
             uri: ""
         },
     },
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
 );
 ```
 
@@ -262,6 +265,9 @@ featureAbility.terminateSelfWithResult(
             }
         },
     },
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
 );
 ```
 
@@ -340,7 +346,11 @@ hasWindowFocus(callback: AsyncCallback\<boolean>): void
 
 ```javascript
 import featureAbility from '@ohos.ability.featureAbility';
-featureAbility.hasWindowFocus()
+featureAbility.hasWindowFocus(
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
+)
 ```
 
 
@@ -388,7 +398,11 @@ getWant(callback: AsyncCallback\<Want>): void
 
 ```javascript
 import featureAbility from '@ohos.ability.featureAbility';
-featureAbility.getWant()
+featureAbility.getWant(
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
+)
 ```
 
 
@@ -458,7 +472,11 @@ terminateSelf(callback: AsyncCallback\<void>): void
 
 ```javascript
 import featureAbility from '@ohos.ability.featureAbility';
-featureAbility.terminateSelf()
+featureAbility.terminateSelf(
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
+)
 ```
 
 
@@ -670,7 +688,11 @@ getWindow(callback: AsyncCallback\<window.Window>): void
 **示例：**
 
 ```javascript
-featureAbility.getWindow()
+featureAbility.getWindow(
+    (err, data) => {
+        console.info("err: " + JSON.stringify(err) + "data: " + JSON.stringify(data))
+    }
+)
 ```
 
 ## featureAbility.getWindow<sup>7+</sup>