Updated Polish translation

_locales/pl/messages.json

@@ -4,7 +4,7 @@
 		"description": "Description of the extension."
 	},
     "commandSaveSelectedTabs": {
-        "message": "Save the selected tabs or their selected contents",
+        "message": "Zapisz wybrane karty lub ich wybraną zawartość",
         "description": "Command (Ctrl+Shift+Y): 'Save the selected tabs or their selected contents'"
     },
     "commandSaveAllTabs": {