[balsa] Fix broken markup in Galician UI translation

[Andre Klapper <aklapper src gnome org>]

commit 95b0525e5f487ed2b3b2895c27cb832144b928c5
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 1 20:09:10 2020 +0100

    Fix broken markup in Galician UI translation

 po/gl.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/gl.po b/po/gl.po
index b65d062a9..4532a5a0a 100644
--- a/po/gl.po
+++ b/po/gl.po
@@ -670,7 +670,7 @@ msgid ""
 "<b>This certificate belongs to:</b>\n"
 msgstr ""
 "Non foi posíbel verificar a autenticidade deste ficheiro.\n"
-"b>Razón:</b> %s\n"
+"<b>Razón:</b> %s\n"
 "<b>Este certificado pertence a:</b>\n"
 
 #: ../libbalsa/libbalsa.c:556