[gthumb] Updated Czech translation

[Marek Černocký <mcernocky src gnome org>]

commit 7d04339d842e9a9ffdcf861c0c152c90cfdbcc60
Author: Marek Černocký <marek manet cz>
Date:   Sun Mar 14 09:21:32 2021 +0100

    Updated Czech translation

 po/cs.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/cs.po b/po/cs.po
index 75b6333c..2a899c00 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -3064,7 +3064,7 @@ msgstr "Přehrát / pozastavit"
 
 #: extensions/gstreamer_tools/callbacks.c:34
 msgid "Mute"
-msgstr "Ztišit"
+msgstr "Vypnout zvuk"
 
 #: extensions/gstreamer_tools/callbacks.c:35
 msgid "Play faster"