[WIP]installation翻訳#9

NEKOGET wants to merge 4 commits intodevelop_japaneseNEKOGET/ci4_user_guide_src:develop_japanesefrom

develop_japanese_draft/nekoget/installationNEKOGET/ci4_user_guide_src:develop_japanese_draft/nekoget/installationCopy head branch name to clipboard