update docs

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/dfx/hiappevent-guidelines.md

@@ -21,7 +21,7 @@ When an asynchronous callback is used, the return value can be processed directl
 
 | API                            | Return Value | Description                                                  |
 | ------------------------------ | ------------ | ------------------------------------------------------------ |
-| configure(ConfigOption config) | boolean      | Sets the configuration options for application event logging.<br/>The value **true** indicates that the operation is successful, and value **false** indicates the opposite. |
+| configure(ConfigOption config) | boolean      | Sets the configuration options for application event logging.<br>The value **true** indicates that the operation is successful, and value **false** indicates the opposite. |
 
 ## How to Develop
 
@@ -69,4 +69,10 @@ In this example, an application event is logged after the application startup ex
    }
    ```
 
-2. Tap the run button on the application UI to run the project.
\ No newline at end of file
+2. Tap the run button on the application UI to run the project.
+
+## Samples
+
+The following sample is provided to help you better understand how to develop the application event logging feature:
+
+- [`JsDotTest`: Event Logging Test (JavaScript) (API 7)](https://gitee.com/openharmony/app_samples/tree/master/DFX/JsDotTest)