fixed f6cbbbda from https://gitee.com/hollokin/docs/pulls/15003

输入法应用开发指南修正
Signed-off-by: NHollokin <taoyuxin2@huawei.com>

zh-cn/application-dev/application-models/inputmethodextentionability.md

@@ -347,10 +347,10 @@ InputMethodExtensionAbility通过[InputMethodExtensionContext](../reference/apis
        // ...
        "extensionAbilities": [
          {
-           "description": "输入法Demo",
+           "description": "inputMethod",
            "icon": "$media:icon",
-           "name": "InputDemoService",
-           "srcEntrance": "./ets/InputMethodExtAbility/InputMethodService.ts",
+           "name": "InputMethodExtAbility",
+           "srcEntrance": "./ets/inputmethodextability/InputMethodService.ts",
            "type": "inputMethod",
            "visible": true,
          }