Update pandoc i18n

Signed-off-by: Yukai Huang <yukaihuangtw@gmail.com>

Author: Yukaii

locales/en.json

@@ -115,5 +115,7 @@
 	"Help us translating on %s": "Help us translating on %s",
 	"Source Code": "Source Code",
 	"Powered by %s": "Powered by %s",
-	"Register": "Register"
-}
+	"Register": "Register",
+	"Export with pandoc": "Export with pandoc",
+	"Select output format": "Select output format"
+}

locales/zh-TW.json

@@ -115,5 +115,7 @@
     "Help us translating on %s": "來 %s 幫我們翻譯",
     "Source Code": "原始碼",
     "Powered by %s": "技術支援：%s",
-    "Register": "註冊"
+    "Register": "註冊",
+    "Export with pandoc": "使用 pandoc 匯出",
+    "Select output format": "選擇輸出格式"
 }