update zh-cn/application-dev/reference/apis/js-apis-inputmethod.md.

Signed-off-by: Nsunyue <sunyue77@h-partners.com>

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

@@ -47,9 +47,10 @@ getInputMethodController(): InputMethodController
     | [InputMethodController](#InputMethodController) | 回调返回当前客户端实例。 |
 
 **示例：**
-  ```js
+  
+```js
   var InputMethodController = inputMethod.getInputMethodController();
-  ```
+```
 
 ## inputMethod.getInputMethodSetting<sup>8+</sup>
 
@@ -67,9 +68,10 @@ getInputMethodSetting(): InputMethodSetting
 
 
 **示例：**
-  ```js
+
+```js
   var InputMethodSetting = inputMethod.getInputMethodSetting();
-  ```
+```
 
 ## InputMethodController
 
@@ -137,14 +139,15 @@ listInputMethod(callback: AsyncCallback&lt;Array&lt;InputMethodProperty&gt;&gt;)
   | callback | Array<[InputMethodProperty](#InputMethodProperty)> | 是   | 返回已安装输入法列表。 |
 
 **示例：**
-  ```js
+  
+```js
    InputMethodSetting.listInputMethod((properties)=>{
      for (var i = 0;i < properties.length; i++) {
        var property = properties[i];
        console.info(property.packageName + "/" + property.methodId);
      }
   });
-  ```
+```
 
 ### listInputMethod
 
@@ -160,13 +163,14 @@ listInputMethod(): Array&lt;InputMethodProperty&gt;
   | Promise<Array<[InputMethodProperty](#InputMethodProperty)>> | 返回已安装输入法列表。 |
 
 **示例：**
-  ```js
+
+```js
    var properties = InputMethodSetting.listInputMethod();
    for (var i = 0;i < properties.length; i++) {
      var property = properties[i];
      console.info(property.packageName + "/" + property.methodId);
    }
-  ```
+```
 
 ### displayOptionalInputMethod
 
@@ -183,11 +187,12 @@ displayOptionalInputMethod(callback: AsyncCallback&lt;void&gt;): void
 | callback | AsyncCallback&lt;void&gt; | 是 | 回调函数。 |
 
 **示例：**
-  ```js
+
+```js
    InputMethodSetting.displayOptionalInputMethod(()=>{
      console.info('displayOptionalInputMethod is called');
    });
-  ```
+```
 
 ### displayOptionalInputMethod
 
@@ -204,6 +209,7 @@ displayOptionalInputMethod(callback: AsyncCallback&lt;void&gt;): void
 | Promise&lt;void&gt; | 回调函数。 |
 
 **示例：**
-    ```js
+
+```js
      InputMethodSetting.displayOptionalInputMethod();
-    ```
\ No newline at end of file
+```
\ No newline at end of file