[gnome-control-center] Updated Czech translation

[Marek Černocký <mcernocky src gnome org>]

commit 2c0d63d008626fa85844551cc3ae5d34578990f3
Author: Marek Černocký <marek manet cz>
Date:   Sun Mar 14 09:14:18 2021 +0100

    Updated Czech translation

 po/cs.po | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/po/cs.po b/po/cs.po
index a8af6842c..6501155ad 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -1930,7 +1930,7 @@ msgstr "Zvuk a média"
 
 #: panels/keyboard/00-multimedia.xml.in:4
 msgid "Volume mute/unmute"
-msgstr "Úplně ztišit/obnovit hlasitost"
+msgstr "Vypnout/zapnout zvuk"
 
 #: panels/keyboard/00-multimedia.xml.in:6
 msgid "Volume down"
@@ -1942,7 +1942,7 @@ msgstr "Zvýšit hlasitost"
 
 #: panels/keyboard/00-multimedia.xml.in:10
 msgid "Microphone mute/unmute"
-msgstr "Úplně ztišit/obnovit mikrofon"
+msgstr "Vypnout/zapnout mikrofon"
 
 #: panels/keyboard/00-multimedia.xml.in:12
 msgid "Launch media player"