fix: i18n

--bug=1052079 --user=王孝刚 【应用】-简体中文语境下，导出对话日志，文件中[优化后的问题]字段显示的是繁体中文 https://www.tapd.cn/57709429/s/1652202

Author: wxg0103

apps/locales/zh_CN/LC_MESSAGES/django.po

@@ -1115,7 +1115,7 @@ msgstr "只支持 and|or"
 
 #: .\apps\application\serializers\chat_serializers.py:228
 msgid "Problem after optimization"
-msgstr "優化後的問題"
+msgstr "优化后的问题"
 
 #: .\apps\application\serializers\chat_serializers.py:229
 msgid "answer"