update translations for 7.4.1 rc2

and force-fix errors using pocheck

Change-Id: Iead6e205e7824b0e4c5f7001661275410fe33360

source/zh-CN/cui/messages.po

@@ -4,7 +4,7 @@ msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: https://bugs.libreoffice.org/enter_bug.cgi?product=LibreOffice&bug_status=UNCONFIRMED&component=UI\n"
 "POT-Creation-Date: 2022-07-08 12:15+0200\n"
-"PO-Revision-Date: 2022-08-19 12:58+0000\n"
+"PO-Revision-Date: 2022-09-09 11:26+0000\n"
 "Last-Translator: Ming Hua <plateauwolf@qq.com>\n"
 "Language-Team: Chinese (Simplified) <https://translations.documentfoundation.org/projects/libo_ui-master/cuimessages/zh_Hans/>\n"
 "Language: zh-CN\n"
@@ -14526,7 +14526,7 @@ msgstr "Microsoft Office 有两个类似于 Writer 字符背景的字符属性
 #: cui/uiconfig/ui/optfltrembedpage.ui:257
 msgctxt "optfltrembedpage|shading"
 msgid "Shading"
-msgstr "阴影"
+msgstr "底纹"
 
 #. 3PFE2
 #: cui/uiconfig/ui/optfltrembedpage.ui:266