[PATCH] build: fix build-aux/GNUmakefile.in syntax

[Ekaitz Zarraga]

>From 620bbc59c60b59cf0cf90448851019c46146c91e Mon Sep 17 00:00:00 2001
From: Ekaitz Zarraga <ekaitz@elenq.tech>
Date: Wed, 18 Oct 2023 17:32:16 +0200
Subject: [PATCH] build: fix build-aux/GNUmakefile.in syntax

* build-aux/GNUmakefile.in: Add missing `
---
 build-aux/GNUmakefile.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-aux/GNUmakefile.in b/build-aux/GNUmakefile.in
index b7bb7928..314bbaf9 100644
--- a/build-aux/GNUmakefile.in
+++ b/build-aux/GNUmakefile.in
@@ -174,7 +174,7 @@ doc/version.texi: ${srcdest}doc/mes.texi GNUmakefile
                       || date +%s -r $<; }                     \
                       | sort -n -r | head -n 1);               \
        dmy=$$(date --date="@$$timestamp" "+%-d %B %Y");        \
-       (set `LANG='                                            \
+       (set `LANG='`                                           \
        echo "@set UPDATED $$dmy";                              \
        echo "@set UPDATED-MONTH $$my";                         \
        echo "@set EDITION $(VERSION)";                         \
-- 
2.41.0