docs(@toss/react): Update OutsideClick/index to hide tossdocs of OutsideClick at Slash documentation

[mucho7]

Overview

Slash 라이브러리 공식문서의 OutsideClick관련 설명 페이지에 tossdocs가 노출되는 문제

Issue: tossdocs is exposed on the Slash library official documentation's OutsideClick description page

OutsideClick/index에 /** @tossdocs-ignore */가 누락되어 LNB에 노출되지 않아도 될 메뉴가 생기는 것으로 보입니다.

PR Checklist

• I read and included theses actions below

1. I have read the Contributing Guide
2. I have written documents and tests, if needed.

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