[skip ci] Update .po files

Autobuild bot on TravisCI · Autobuild bot on TravisCI · commit df556d44c3b4 · 2019-01-23T15:30:54.000+09:00
diff --git a/extending/extending.po b/extending/extending.po
@@ -11,7 +11,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2019-01-01 15:21+0900\n"
 "PO-Revision-Date: 2018-08-04 17:31+0000\n"
-"Last-Translator: TAKAHASHI Shuuji <shuuji3@gmail.com>\n"
+"Last-Translator: Shuuji TAKAHASHI (shuuji3) <shuuji3@gmail.com>\n"
 "Language-Team: Japanese (http://www.transifex.com/python-doc/python-27/language/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
