fix: sendKeywordNotification 메소드 1+4N 개선#2207

Soundbar91 wants to merge 4 commits intorefactor/2202-keyword-extractorBCSDLab/KOIN_API_V2:refactor/2202-keyword-extractorfrom

fix/2206-search-articleBCSDLab/KOIN_API_V2:fix/2206-search-articleCopy head branch name to clipboard