chore: Translate pressbooks-multi-institution.pot in zh

97% of minimum 25% translated source file: 'pressbooks-multi-institution.pot'
on 'zh'.

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

languages/pressbooks-multi-institution-zh.po

@@ -404,7 +404,7 @@ msgstr[0] "以下条目包含无效内容："
 
 #: resources/views/partials/errors/invalid-domains.blade.php:18
 msgid "Please correct the invalid content and resubmit the form."
-msgstr ""
+msgstr "请更正无效内容并重新提交表单。"
 
 #: resources/views/table/book-admins.blade.php:8
 msgid "No institution assigned"