Merge pull request GitbookIO#1066 from hirofumi1987/master

Fixed Japanese translation

Author: SamyPesse

theme/i18n/ja.json

@@ -1,20 +1,20 @@
 {
     "LANGS_CHOOSE": "言語を選択",
     "GLOSSARY": "用語集",
-    "GLOSSARY_INDEX": "インデックス",
+    "GLOSSARY_INDEX": "索引",
     "GLOSSARY_OPEN": "用語集",
-    "GITBOOK_LINK": "で公開 GitBook",
+    "GITBOOK_LINK": "GitBookで公開 ",
     "SUMMARY": "目次",
     "SUMMARY_INTRODUCTION": "はじめに",
     "SUMMARY_TOGGLE": "目次",
     "SEARCH_TOGGLE": "検索",
     "SEARCH_PLACEHOLDER": "検索すると入力",
     "FONTSETTINGS_TOGGLE": "フォント設定",
     "SHARE_TOGGLE": "シェア",
-    "SHARE_ON": "でシェア {{platform}}",
+    "SHARE_ON": "{{platform}}でシェア",
     "FONTSETTINGS_WHITE": "白",
-    "FONTSETTINGS_SEPIA": "Sepia",
+    "FONTSETTINGS_SEPIA": "セピア",
     "FONTSETTINGS_NIGHT": "夜",
-    "FONTSETTINGS_SANS": "Sans",
-    "FONTSETTINGS_SERIF": "Serif"
+    "FONTSETTINGS_SANS": "ゴシック体",
+    "FONTSETTINGS_SERIF": "明朝体"
 }