문서: 오타 수정 ( #3019 )

[fp024]

Please check if the PR fulfills these requirements

• [x] It's the right issue type on the title
• [x] When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)
• [x] The commit message follows our guidelines
• (n/a) Tests for the changes have been added (for bug fixes/features)
• [x] Docs have been added/updated (for bug fixes/features)
• [x] It does not introduce a breaking change or has a description of the breaking change

Description

• This fix required no testing as it was a simple typo fix in the Code Syntax Highlighting Plugin Guide documentation.
• 이 문서가 npm 사이트에 게시되는 부분이므로, 왠만하면 수정이 되는 것이 나을 것 같아서 올렸습니다. 감사합니다. 좋은하루되세요. 👍
  • https://github.com/nhn/tui.editor/issues/3019

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