docs: add examples for modifying launch parameters in English and Chinese documentation

docs/en/source/camera_devices/4_application_guide/launch_parameters.md

@@ -24,6 +24,12 @@ Launch parameters can be modified in two ways:
 
    This is useful when you want a setting to become a long-term default, such as a fixed resolution, frame rate, camera name, or synchronization mode. Device launch files are located in [orbbec_camera/launch](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch). Choose the `*.launch.py` file that matches your camera model.
 
+   For example, modify the default camera name to `camera_02`:
+
+   ```python
+   DeclareLaunchArgument('camera_name', default_value='camera_02')
+   ```
+
    If you build from source and do not use `--symlink-install`, you usually need to rebuild the workspace and source it again after modifying a launch file:
 
    ```bash
@@ -49,7 +55,7 @@ The following are the launch parameters available:
 * **`device_preset`**
     * The default value is determined by the launch file. See [predefined presets](../5_advanced_guide/configuration/predefined_presets.md) for available presets and recommended scenarios. You can use the following command to view the configurable modes; the tool also prints the preset list and preset version information.
     ```bash
-    ros2 run orbbec_camera list_camera_profile_mode_node
+    ros2 run orbbec_camera list_devices_node
     ```
 *   **`[color|depth|left_ir|right_ir|ir]_[width|height|fps|format]`**
     *   The resolution and frame rate of the sensor stream.

docs/en/source/camera_devices/5_advanced_guide/configuration/predefined_presets.md

@@ -2,6 +2,12 @@
 
 This document lists available presets, features, and recommended scenarios by product. Please select a preset name that matches the product model and set it as the value of the `device_preset` parameter.
 
+For example, modify the default device preset to `High Accuracy` in the launch file:
+
+```python
+DeclareLaunchArgument('device_preset', default_value='High Accuracy')
+```
+
 ## Gemini 330 / Gemini 330L / Gemini 335 / Gemini 335L
 
 | Defaults | Features | Recommended usage scenarios |

docs/zh/source/camera_devices/4_application_guide/launch_parameters.md

@@ -24,6 +24,12 @@
 
    适合将参数作为长期默认配置使用，例如团队固定使用某个分辨率、帧率、相机名称或同步模式。各设备的 launch 文件位于 [orbbec_camera/launch](https://github.com/orbbec/OrbbecSDK_ROS2/tree/v2-main/orbbec_camera/launch)，请选择与设备型号对应的 `*.launch.py` 文件。
 
+   例如，将相机名称的默认值修改为 `camera_02`：
+
+   ```python
+   DeclareLaunchArgument('camera_name', default_value='camera_02')
+   ```
+
    如果您是从源码构建并且没有使用 `--symlink-install`，修改 launch 文件后通常需要回到工作空间重新编译并重新 source：
 
    ```bash
@@ -49,7 +55,7 @@
 *   **`device_preset`**
     *   默认值由启动文件决定。可选 preset 和推荐场景请参考 [设备预设](../5_advanced_guide/configuration/predefined_presets.md)。可以使用下面命令查看可设置模式；该工具会同时打印 preset 列表和 preset 版本信息。
     ```bash
-    ros2 run orbbec_camera list_camera_profile_mode_node
+    ros2 run orbbec_camera list_devices_node
     ```
 *   **`[color|depth|left_ir|right_ir|ir]_[width|height|fps|format]`**
     *   传感器流的分辨率和帧率。

docs/zh/source/camera_devices/5_advanced_guide/configuration/predefined_presets.md

@@ -2,6 +2,12 @@
 
 本文档按产品列出可用预设、特点与推荐场景。请选择匹配产品型号的预设名称，并将其设置为`device_preset`参数的值。
 
+例如，在 launch 文件中将设备预设的默认值修改为 `High Accuracy`：
+
+```python
+DeclareLaunchArgument('device_preset', default_value='High Accuracy')
+```
+
 ## Gemini 330 / Gemini 330L / Gemini 335 / Gemini 335L
 
 | 预设 | 特点 | 推荐使用场景 |
@@ -75,4 +81,3 @@ ros2 launch orbbec_camera gemini2L.launch.py config_file_path:=gemini2L_dual_ir.
 | --- | --- | --- |
 | G336X AMR Default |  优化其在阳光照射和重复纹理的仓库场景中具有可靠的深度性能<br> 推荐深度分辨率：1280x800 / 640x400 / 424x266 |  仓库AMRs |
 
-