Make git-notes heading text localizable

options/locale/locale_en-US.ini

@@ -1313,6 +1313,7 @@ settings.unarchive.error = An error occured while trying to un-archive the repo.
 diff.browse_source = Browse Source
 diff.parent = parent
 diff.commit = commit
+diff.git-notes = git-notes:
 diff.data_not_available = Diff Content Not Available
 diff.show_diff_stats = Show Diff Stats
 diff.show_split_view = Split View