fix

Author: Chuchun1991

dita/RTC-NG/API/rtc_api_data_type_unreal.dita

@@ -255,7 +255,6 @@
                 <li><xref keyref="VOICE_CONVERSION_PRESET"/></li>
                 <li><xref keyref="WATERMARK_FIT_MODE"/></li>
                 </ul>
-            </ul>
         </section>
     </refbody>
 </reference>