Update Japanese translation

po/ja.po

@@ -12,7 +12,7 @@ msgstr ""
 "Project-Id-Version: gtksourceview master\n"
 "Report-Msgid-Bugs-To: https://gitlab.gnome.org/GNOME/gtksourceview/issues\n"
 "POT-Creation-Date: 2020-02-14 08:46+0000\n"
-"PO-Revision-Date: 2020-01-28 21:00+0900\n"
+"PO-Revision-Date: 2020-02-29 22:00+0900\n"
 "Last-Translator: sicklylife <translation@sicklylife.jp>\n"
 "Language-Team: Japanese <gnome-translation@gnome.gr.jp>\n"
 "Language: ja\n"
@@ -228,7 +228,7 @@ msgstr "その他"
 #. (itstool) path: chdr.lang/language@_name
 #: chdr.lang:24
 msgid "C/ObjC Header"
-msgstr "C/ObjC のヘッダー"
+msgstr "C/ObjC ヘッダー"
 
 #. (itstool) path: cpphdr.lang/language@_name
 #: cpphdr.lang:24
@@ -368,7 +368,7 @@ msgstr "変換入力に不正なバイトシーケンス"
 #: gtksourceview/gtksourcebufferoutputstream.c:848
 #, c-format
 msgid "Error during conversion: %s"
-msgstr "変換時にエラー: %s"
+msgstr "変換中にエラーが発生しました: %s"
 
 #: gtksourceview/gtksourcebufferoutputstream.c:929
 #, c-format