added new word

resource/locales/en-US/translation.json

@@ -47,6 +47,7 @@
   "History": "History",
   "Presentation Mode": "Presentation",
   "Not available for guest": "Not available for guest",
+  "Shere this page link to public": "Shere this page link to public",
   "username": "Username",
   "Created": "Created",
   "Last updated": "Updated",

resource/locales/ja/translation.json

@@ -47,6 +47,7 @@
   "History": "更新履歴",
   "Presentation Mode": "プレゼンテーション",
   "Not available for guest": "ゲストユーザーは利用できません",
+  "Shere this page link to public": "外部に共有するリンクを発行する",
   "username": "ユーザー名",
   "Created": "作成日",
   "Last updated": "最終更新",