chore: Translate transifex_input.json in zh_CN

98% of minimum 50% translated source file: 'transifex_input.json'
on 'zh_CN'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/studio-frontend/src/i18n/messages/zh_CN.json

@@ -118,7 +118,7 @@
   "unitDepthShortDescription": "管理单元深度",
   "unitDepthLongDescription": "将课程内容划分成可管理的部分可以促进学习者的参与。我们建议单元不超过三个组成部分。",
   "proctoringEmailShortDescription": "添加Proctortrack支持电子邮件",
-  "proctoringEmailLongDescription": "使用 课程需要升级电子邮件。确保学习者和支持人员可以就监考问题（例如上诉、考试重置等）联系您的课程团队。",
+  "proctoringEmailLongDescription": "使用Proctortrack 课程需要发送联系电子邮件。确保学习者和支持人员可以就监考问题（例如上诉、考试重置等）联系您的课程团队。",
   "updateLinkLabel": "更新",
   "completionCountLabel": "{completed}/{total} 完成",
   "completedItemLabel": "完成",