[gnome-characters] Update Japanese translation

[Daiki Ueno <dueno src gnome org>]

commit a32b21a38f31f8b48bd121f6f0955958e35aaa16
Author: Daiki Ueno <dueno src gnome org>
Date:   Tue Aug 18 10:17:14 2015 +0900

    Update Japanese translation

 po/ja.po |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/po/ja.po b/po/ja.po
index 348ed01..6f379c7 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -8,7 +8,7 @@ msgstr ""
 "Project-Id-Version: org.gnome.Characters 3.15.91.1\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2015-08-18 06:39+0900\n"
-"PO-Revision-Date: 2015-08-18 06:40+0900\n"
+"PO-Revision-Date: 2015-08-18 10:17+0900\n"
 "Last-Translator: Daiki Ueno <ueno gnu org>\n"
 "Language-Team: Japanese\n"
 "Language: ja\n"
@@ -126,7 +126,7 @@ msgstr "数学記号"
 
 #: ../src/categoryList.js:75
 msgid "Letters"
-msgstr ""
+msgstr "文字記号"
 
 #: ../src/categoryList.js:81
 msgid "Emoticons"