l10n: zh_CN: updated translation for 2.48

[dyrone]

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[github-actions]

Errors and warnings found by git-po-helper in workflow #856:

------------------------------------------------------------------------------
ERROR [po/zh_CN.po@6733f99]	/tmp/171683936--zh_CN.po:17478: format specifications in 'msgid' and 'msgstr' for argument 1 are not the same 
ERROR [po/zh_CN.po@6733f99]	/usr/bin/msgfmt: found 1 fatal error 
ERROR [po/zh_CN.po@6733f99]	5804 translated messages. 
ERROR [po/zh_CN.po@6733f99]	fail to check po: exit status 1 
INFO checking commits: 0 passed, 1 failed.        
------------------------------------------------------------------------------
INFO downloading pot file from /~https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 

ERROR: fail to execute "git-po-helper check-commits"