[seahorse] Fix incorrect markup in Catalan help translation

[Andre Klapper <aklapper src gnome org>]

commit 8c1e94df8aad17c725e7d931d00ac9c968ba5f6f
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Feb 23 11:44:35 2020 +0100

    Fix incorrect markup in Catalan help translation
    
    https://gitlab.gnome.org/Teams/Translation/ca/issues/8

 help/ca/ca.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/ca/ca.po b/help/ca/ca.po
index 7842bba2..10fecb6e 100644
--- a/help/ca/ca.po
+++ b/help/ca/ca.po
@@ -125,7 +125,7 @@ msgid ""
 "safe."
 msgstr ""
 "En canvi, una <em>Clau privada</em> és la clau que us permet desencriptar, o"
-" obrir, el cadenat. Com que la </em>Clau privada</em> es fa servir per "
+" obrir, el cadenat. Com que la <em>Clau privada</em> es fa servir per "
 "desencriptar missatges segurs, us interessa protegir la vostra <em>Clau "
 "privada</em>."