[gthumb] Update Japanese translation

[Translations User D-L <translations src gnome org>]

commit 50d3e26b7ad193bb136748e964428f09c5147377
Author: sicklylife <translation sicklylife jp>
Date:   Fri Jan 31 21:13:28 2020 +0000

    Update Japanese translation

 po/ja.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/ja.po b/po/ja.po
index 894697de..922e0a31 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -5685,7 +5685,7 @@ msgstr "gThumb について(_A)"
 
 #: gthumb/resources/history-menu.ui:9
 msgid "_Delete History"
-msgstr "履歴の削除(_D)"
+msgstr "履歴を削除(_D)"
 
 #~ msgid "File is not a valid .desktop file"
 #~ msgstr "妥当な .desktop ファイルではありません"