update zh-cn/application-dev/reference/apis/js-apis-system-parameterV9.md.

Signed-off-by: Ncheng_jinsong <chengjinsong2@huawei.com>
Signed-off-by: Ncheng_jinsong <chengjinsong2@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-system-parameterV9.md

@@ -11,7 +11,7 @@
 ## 导入模块
 
 ```ts
-import systemparameter from '@ohos.systemparameterV9'
+import systemparameter from '@ohos.systemParameterV9'
 ```
 ## SystemParameterErrorCode