l10n: ko: fix minor typo in Korean translation

[jiangxin]

No description provided.

[github-actions]

Errors and warnings found by git-po-helper in workflow #926:

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INFO [po/ko.po@ec507ac]	3608 translated messages. 
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ERROR [po/ko.po@ec507ac]	Found file-location comments in po file. By submitting a location-less 
ERROR [po/ko.po@ec507ac]	"po/XX.po" file, the size of the Git repository can be greatly reduced. 
ERROR [po/ko.po@ec507ac]	See the discussion below: 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	    https://lore.kernel.org/git/[email protected]/ 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	As how to commit a location-less "po/XX.po" file, See: 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	    the [Updating a "XX.po" file] section in "po/README.md" 
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WARNING [po/ko.po@ec507ac]	mismatched patterns: refs/heads 
WARNING [po/ko.po@ec507ac]	>> msgid: HEAD not found below refs/heads! 
WARNING [po/ko.po@ec507ac]	>> msgstr: 레퍼런스/헤드 아래에 HEAD가 없습니다! 
WARNING [po/ko.po@ec507ac]                           
WARNING [po/ko.po@ec507ac]	mismatched patterns: refs/remotes/ 
WARNING [po/ko.po@ec507ac]	>> msgid: Note: A branch outside the refs/remotes/ hierarchy was not removed; 
WARNING [po/ko.po@ec507ac]	to delete it, use:        
WARNING [po/ko.po@ec507ac]	>> msgstr: 알림: 레퍼런스/리모트/ 계층 구조 밖에 있는 일부 브랜치가 제거되지 않았습니다. 
WARNING [po/ko.po@ec507ac]	삭제하려면 다음을 사용하십시오:         
WARNING [po/ko.po@ec507ac]                           
WARNING [po/ko.po@ec507ac]	mismatched patterns: refs/remotes/<...>/HEAD 
WARNING [po/ko.po@ec507ac]	>> msgid: delete refs/remotes/<name>/HEAD 
WARNING [po/ko.po@ec507ac]	>> msgstr: 레퍼런스/리모트/<이름>/HEAD 값을 삭제합니다 
WARNING [po/ko.po@ec507ac]                           
WARNING [po/ko.po@ec507ac]	mismatched patterns: refs/remotes/<...>/HEAD 
WARNING [po/ko.po@ec507ac]	>> msgid: set refs/remotes/<name>/HEAD according to remote 
WARNING [po/ko.po@ec507ac]	>> msgstr: 레퍼런스/리모트/<이름>/HEAD 값을 리모트에 맞게 설정합니다 
WARNING [po/ko.po@ec507ac]                           
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WARNING commit ec507ac: author (seoyeon-kwon <[email protected]>) and committer (Jiang Xin <[email protected]>) are different 
INFO checking commits: 0 passed, 1 failed.        
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INFO downloading pot file from https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 
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ERROR [po/ko.po@ec507ac]	3000 new string(s) in 'po/git.pot', but not in your 'po/XX.po' 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	  > po/git.pot:24: this message is used but not defined in /tmp/3264559825--ko.po 
ERROR [po/ko.po@ec507ac]	  > po/git.pot:51: this message is used but not defined in /tmp/3264559825--ko.po 
ERROR [po/ko.po@ec507ac]	  > po/git.pot:83: this message is used but not defined in /tmp/3264559825--ko.po 
ERROR [po/ko.po@ec507ac]	  > ...                   
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	772 obsolete string(s) in your 'po/XX.po', which must be removed 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	  > po/XX.po:83: warning: this message is not used 
ERROR [po/ko.po@ec507ac]	  > po/XX.po:108: warning: this message is not used 
ERROR [po/ko.po@ec507ac]	  > po/XX.po:148: warning: this message is not used 
ERROR [po/ko.po@ec507ac]	  > ...                   
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	You can download the latest "po/git.pot" file from: 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]		https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 
ERROR [po/ko.po@ec507ac]                           
ERROR [po/ko.po@ec507ac]	Please rebase your branch to the latest upstream branch, 
ERROR [po/ko.po@ec507ac]	run "git-po-helper update po/XX.po" to update your po file, 
ERROR [po/ko.po@ec507ac]	and translate the new strings in it. 
ERROR [po/ko.po@ec507ac]                           

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