Merge pull request #114 from masamiy/toc-edit

Translated title of content

lang.md

@@ -3,10 +3,10 @@ index: "ホームへ"
 CoC: "行動規範"
 setup:  "セットアップ"
 episodes: "エピソード"
-extras: "エキストラ"
+extras: "追加情報"
 LICENSE: "ライセンス"
 improve: "このページを改善します"
-reference: "参照"
+reference: "参照目録"
 aio: "オールインワン"
 schedule: "計画"
 search: "検索"
@@ -15,15 +15,16 @@ contribute: "貢献します"
 source: "ソース"
 cite: "引用します"
 contact: "連絡します"
-keypoints: "要点"
+keypoints: "まとめ"
 overview: "概要"
 break: "休止"
 previous: "戻る"
 next: "次へ"
 episode: "エピソード"
 lessonHome: "レッスンのホーム"
+title: "タイトル"
 teaching: "講義"
-exercises: "練習"
+exercises: "演習"
 min: "分"
 questions: "質問"
 objectives: "目標"