Fixed the contact information.

conf.py

@@ -50,7 +50,7 @@ master_doc = 'index'
 # General information about the project.
 project = u'LimeSurvey學習手冊'
 copyright = u'2017-2018, 依瑪貓, 2017-2018, 國立臺灣師範大學, 2020, 智新資通'
-author = u'依瑪貓 <imacat@steps.com.tw>'
+author = u'依瑪貓 <imacat@mail.imacat.idv.tw>'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the

index.rst

@@ -9,7 +9,7 @@ LimeSurvey學習手冊
 版權所有 |copy| 2017-2020 依瑪貓， 2017-2018 國立臺灣師範大學， 2020 智新資通。
 
 「LimeSurvey學習手冊」由
-`依瑪貓 <imacat@steps.com.tw>`_ 撰寫，採用
+`依瑪貓 <imacat@mail.imacat.idv.tw>`_ 撰寫，採用
 `創用 CC 姓名標示 4.0 Unported 授權條款 <https://creativecommons.org/licenses/by/4.0/>`_
 授權。