[genius] Fix incorrect markup in Czech UI translation

[Andre Klapper <aklapper src gnome org>]

commit 6c15cd889d605472310737f2bc1e4dc726f38a5b
Author: Andre Klapper <a9016009 gmx de>
Date:   Wed Mar 4 20:00:56 2020 +0100

    Fix incorrect markup in Czech UI translation

 po/cs.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/cs.po b/po/cs.po
index 9c7bcf92..02960dfc 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -3939,7 +3939,7 @@ msgid ""
 "\n"
 "%s"
 msgstr ""
-"<B>Nelze zobrazit nápovědu</b>\n"
+"<b>Nelze zobrazit nápovědu</b>\n"
 "Detaily: %s"
 
 #: ../src/gnome-genius.c:2006