[gnome-shell] Update Slovak translation

[Translations User D-L <translations src gnome org>]

commit b30d999878a71fb33e22f4f7cfa6450905b33db1
Author: Peter Mráz <etkinator gmail com>
Date:   Thu Mar 19 06:20:35 2020 +0000

    Update Slovak translation

 po/sk.po | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/po/sk.po b/po/sk.po
index e14abe4865..fa542dcd02 100644
--- a/po/sk.po
+++ b/po/sk.po
@@ -1345,9 +1345,9 @@ msgstr "Inštalácia aktualizácií a vypnutie"
 #, javascript-format
 msgid "The system will power off automatically in %d second."
 msgid_plural "The system will power off automatically in %d seconds."
-msgstr[0] "Systém sa automaticky vypne o %d sekundu."
-msgstr[1] "Systém sa automaticky vypne o %d sekundy."
-msgstr[2] "Systém sa automaticky vypne o %d sekúnd."
+msgstr[0] "Systém sa automaticky vypne o %d sekúnd."
+msgstr[1] "Systém sa automaticky vypne o %d sekundu."
+msgstr[2] "Systém sa automaticky vypne o %d sekundy."
 
 #: js/ui/endSessionDialog.js:63
 msgctxt "checkbox"