[LyX/master] Restore \origin tag

[Scott Kostyshak]

commit d5bb0e541adbaf606c6202fd57017797d9daac88
Author: Scott Kostyshak <skostysh at lyx.org>
Date:   Thu Sep 18 12:06:01 2025 +0200

    Restore \origin tag
    
    Amends 7ccdf4f6.
---
 lib/doc/ja/Additional.lyx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/doc/ja/Additional.lyx b/lib/doc/ja/Additional.lyx
index aab1a97655..fab7f039a3 100644
--- a/lib/doc/ja/Additional.lyx
+++ b/lib/doc/ja/Additional.lyx
@@ -3,7 +3,7 @@
 \begin_document
 \begin_header
 \save_transient_properties false
-\origin unavailable
+\origin /systemlyxdir/doc/ja/
 \textclass scrbook
 \begin_preamble
 % DO NOT ALTER THIS PREAMBLE!!!