Add Document understanding serving SDK links (#3880)

docs/pipeline_deploy/serving.en.md

@@ -250,6 +250,10 @@ Find the high-stability serving SDK corresponding to the pipeline in the table b
 <td>General video detection</td>
 <td><a href="https://paddle-model-ecology.bj.bcebos.com/paddlex/PaddleX3.0/deploy/paddlex_hps/public/sdks/v3.0.0rc1/paddlex_hps_video_detection_sdk.tar.gz">paddlex_hps_video_detection_sdk.tar.gz</a></td>
 </tr>
+<tr>
+<td>Document understanding</td>
+<td><a href="https://paddle-model-ecology.bj.bcebos.com/paddlex/PaddleX3.0/deploy/paddlex_hps/public/sdks/v3.0.0rc1/paddlex_hps_doc_understanding_sdk.tar.gz">paddlex_hps_doc_understanding_sdk.tar.gz</a></td>
+</tr>
 </tbody>
 </table>
 </details>

docs/pipeline_deploy/serving.md

@@ -250,6 +250,10 @@ paddlex --serve --pipeline image_classification --use_hpip
 <td>通用视频检测</td>
 <td><a href="https://paddle-model-ecology.bj.bcebos.com/paddlex/PaddleX3.0/deploy/paddlex_hps/public/sdks/v3.0.0rc1/paddlex_hps_video_detection_sdk.tar.gz">paddlex_hps_video_detection_sdk.tar.gz</a></td>
 </tr>
+<tr>
+<td>文档理解</td>
+<td><a href="https://paddle-model-ecology.bj.bcebos.com/paddlex/PaddleX3.0/deploy/paddlex_hps/public/sdks/v3.0.0rc1/paddlex_hps_doc_understanding_sdk.tar.gz">paddlex_hps_doc_understanding_sdk.tar.gz</a></td>
+</tr>
 </tbody>
 </table>
 </details>